Proceedings of the United States National Museum

NEW CYCLOGASTERID FISHES FROM JAPAN.

By

C.

H. Gilbert and

C.V.

Burke,

OfStanfordUniversity, California.

The

expedition in 1906 of the Fisheries steamer Albatross to the northwestPacific

made

notable additions to the cyclogasterid fauna ofBering

Sea and

Japan.

A

total of 35

new

species weresecm-ed, of wliich 23

were from

Japanese waters,

and

are here described.

The

family is miquestionably of boreal origin,

and

is distributed along shore

and

in

moderate

depths as far toward the Tropics as the colder currents can be distinctly traced. Farther south, a limited

number

of species occur at greater deptlis.

The group

is richly represented inthe

Okhotsk

Sea, extendsitsrange throughout the

Sea

of

Japan

^to the Straits of Tsushima,

and on

the eastern side of

Hondo

regularly atleast as far to thesouth as

Matsushima Bay. Beyond

this point northernspecies arenot

known

to extend, but

two

peculiar gigantic forms (Cyclogasterowstoni

and

Cyclogaster tavxikae) appear in

Sagami Bay

atdepths

which have

not been determined. This occurrence is paralleled

among

the Cottoids (also a boreal group) in the appear- ance of the peculiar genera Stlengis, Schmidtina,

and Daruma

in

Sagami and Suruga

Bays,welltothe

southward

oftheareaof

common

distribution of the northern genera.

The

cj'clogasterids are repre- sented farther to the south in Japanese waters

by two

forms, Care- proctusrhodomelas

and

Paralipansatramentatus,

which

were obtained alongthemarginsofthe

Kuro ^Siwo

^atdepthsof405

and

649 fathoms,

and were

taken with assemblages of forms belonging to a strictly tropical deep-seafauna.

A

similar distribution is

shown

also in the eastern Pacific,

where

Paraliparis invades the deep waters of the Tropics,

and

is represented

by

several species

which

are strictly con- fined to the deep-sea tropical fauna.

There

are here recorded

from

Japanese waters (including the

Okhotsk

Sea) 31speciesof cyclogasterids, of

which

only 4 are

known

to extend their range as far as Bering Sea,

and one

of thefour is a pelagic

form

ofgeneral distribution

m

the northPacific. BeringSea,

on

the other hand, has approximately 25 species

which

are im- recorded

from

the southwest. After

making

^all necessar}' allow- ance for the imperfect surveys of these regions, it appears obvious

ProceedingsU. S. National Museum, Vol.42—_No.1907.

351

352 PROCEEDINGS OF THE NATIONAL MUSEUM.

^VOL.42.

thatso far asthe cyclogasterids are concerned, asharplineseparates thefaunaofBering Sea

from

thatof the

Okhotsk and

the seas tothe south.

Within

theJapanese area, while data are stillincomplete, afaunal line of

some

value appears to separate the inclosed

Sea

of

Japan

(including the Gulf^ofTartary)

from

the

Okhotsk Sea and

the eastern shores generally.

As

^is

shown

in the following table of distribution, 12 species are recorded

from

the

Sea

of

Japan and

24 species

from

the

Okhotsk and

the eastern shores of

Hokkaido and Hondo; and

but five of these are

known

to occur ⁱⁿ both districts. Further exploration will increase the distribution of

many

of these species, but can hardly obliterate the faunal distinction

which

here

seems

apparent.

The

types of the

new

species here described are all deposited in the

United

States National

Museum.

The

drawings are

by

Mr.

W.

^S. Atkinson.

TableofdistributionofJapaneseCyclogasterids.

[Namesinbrackets areofspecies previouslyknown.]

Name. _Japan.^Seaof Okhotsk

and ea8t«rn

coast.

Bering

Sea. Depth.

Cyclogastercurilensis Cyclogastersimushirx Cyclogastertessellatus CyclogasterUigassizii]

Cyclogaster frenatus Cyclogastertanakx Cyclogaster[owstoni]

Cyclogaster[ochotensisl Cyclogastermgens

Careproctus [cypselurus]

Careproctus rastrinus Careproctus acanthodcs Careproctus trachysoma Careproctus rhodomelas Careproctus pellucidus Careproctussegaliensis Careproctusbathycoetus Careproctus roseofuscus Careproctus[collctti]

Careproctus sinensis Careproctuspycnosoma Careproctus curilanus Careproctushomopterus Careproctus entomelas Careproctus entargyreus Crystallias[matsushimse]

Paraliparis atramentatus Paraliparismelanobranchus

.

Paraliparisentochloris Rhinoliparis[barbulifer]

Nectoliparis[pelagicus]

Shore.

Shore.

61 to 150 fathoms.

Shoreto 47fathoms.

207fathoms.

Unknown.

Unknown.

21to75fathoms.

250fathoms.

510fathoms.

73to 119fathoms.

318fathoms.

243 to 429fathoms.

405 to 507 fathoms.

129 to 182fathoms.

119fathoms.

1,800fathoms.

100 to 119fathoms.

390 to 440fathoms.

200fathoms.

229fathoms.

229fathoms.

440fathoms.

428 fathoms.

35 to 66 fathoms.

52to200 fathoms.

649fathoms.

440fathoms.

100fathoms.

192 to 359 fathoms.

269 to 533fathoms.

KEY TO JAPANESE SPECIES OF CYCLOGASTER.

c^ Anterior portionofdorsalseparatedfrom remainderoffinbya deepnotch.

b^. Gillslitextendingdownwardtooppositebaseofupperpectoral ray only; pyloric csecaabout70; diameterofdiskhalflengthofhead; dorsal34; anal26; pec-

toral29 curilensis,1

.

62. Gillslitextendingdownwardtooppositebaseoffourth pectoralray; diameter ofdiskmuch less thanhalflength ofhead; dorsal44; anal 34; pectoral40, simushirse, 2.

NO.1907.

YEW CYCLOOASTERin FISHEH—GILnERT AND BURKE. 353

a-. Dorsal notnotchedanteriorly.

c'. Lastdorsalandanal raysnot shortened^toforma definite nc^tch atunion with caudal(sometimesoneorbothslightlyshortened in C.agassizii).

dK Caudalbroadly joinedbybasiilhalf orthree-fourths to dorsalandanal.

e'. Gillslitvery wide, reachinglevel ofsixteenth pectoral ray; diameterof disk less than one-third length of head, widely separated from vent, which is nearer origin of anal fin; dorsal 48; anal 37; pectoral

35 tessellatus, 3.

e'-. Gillslitnarrower,reachinglevel ofeighthorninth pectoralray; head very

•broad, depressed; eye very small, less than half interorbital width;

diameterofdisknearlyhalfhead, separatedfromventbyitsowndiame- ter ormore; dorsal 44; anal34; pectoral34 agassizii, 4.

d^. Caudal very narrowlyjoinedtodorsalandanal, bynotmorethanitsbasal fifth; head narrow, compressed; diameter of eye nearly three-fourths interorbital width; diameter of disk about two-fifths length of head, separated from ventbya distancelessthan itsowndiameter; dorsal 37;

anal31; pectoral34 frcnatus,5.

c^. Lastdorsal and anal rays shortened, forming adistinctnotch at union with caudal.

p. ^Pectoralnotnotched(atleastin adults).

gK Headflattened inthe nasalregion,snoutlowandprojecting; gill slit reachinglevel of tenth oreleventh pectoral ray; dorsal and anal joinedtobasal two-thirdsofcatidal; diameterofdisklessthanhalf lengthofhead, widelyseparatedfromvent,whichisnearerorigin ofanalfin; dorsal 45; anal_34; pectoral41 tanaka;,6.

g^. Headveryconvex and rounded inthe nasalregion; snoutdeepand

short,notprojecting; gill slitextendingto level oftenthoreleventh pectoral ray; diameter of disk 2tin head,widely separated from vent; dorsal 43; anal_36; pectoral40 oustoni,!.

p. ^Pectoral notched; gill slit extending down to opposite sixteenth or eighteenth pectoralray;diameterofdisklessthanhalflengthofhead, separated from ventbyadistanceaboutequaling its own diameter;

dorsal45to 47; anal 36or 37; pectoral42.

/i'. Bodystout,thedepth2.8inlength; jaws nearly equal; oftenwith parallelblackstripes; depth40to75fathoms ochoiensis,8.

h'^. Bodyslender,thedepth3.3 inlength; upper jawmuchprojecting, exposing nearlyallthe upper teeth anteriorly; noblackstripes;

depth250fathoms ingens,9.

1.CYCLOGASTER(NEOLIPARIS) CURTLENSIS, newspecies.

Plate41,fig. 1.

Type.

—

^{C'at.No.73326,}

^U.S.N.M.

^{Afemale, 110}

^mm.

^{intotalleiifctli,}

from Milno Bay, SimiisliirIsland, Japan.

Closely related to C. caUyodan,

from which

it diilcrs in the larger disk

and

the vent

more

posterior in position,

Measurements

in lumdredths of total length excluding the caudal

fin:

Length

of

head

29; greatest width of

head

_24.5; greatest depth of

head

opposite gill slit 22; greatest depth of

body

25; depth of caudal peduncle 9; interocular width 10; diameter of eye 4;

width at angles of

mouth

15; distance

from

tip of snout to end of maxillary 12; length of gill slit 6; distance

from

tip of snout

20441°—Proc.X.M.vol.42—12 23

354 PROCEEDINGS OF THE NATIONAL MUSEUM.

yol.42.

to disk 17; to anus 38; diameter of disk 15; distance

from

disk to anus 7; anus to front of anal fin 15; length of longest pectoral ray 15; of longest ray of lowerlobe 12; of shortest ray innotch 8.

Dorsal 34; anal 26; pectoral 29; pyloric ^{ci^ca} about 70.

Head and body

^{as in C.} callyodon;

head

depressed, the width greater than the depth; profile depressed

above

the eyes; maxillary reaching vertical

from

anterior half of eye; snout depressed; jaws about equal. Teeth as in C. callyodon, in about nine oblique

rows

in the half of each jaw. Anterior nostril in a

prominent

tube; pos- terior nostril with a raised rim, the anterior outer

margin

of

rim

raisedto

form

a

narrow

pointedflap. Gillslitsmall, extending

down- ward

to opposite the base of the

upper

pectoralray.

The

anterior nine dorsal raysunsegmented, thefirst five set off

by

a notch. Caudal truncate, dorsal

and

anal connected to it slightly or not at all. Pectoral with a shallownotch, the lowerlobe consist-

mg

of six rays, not reaching posterior

margin

of disk. Disk larger than in C. callyodon, its diameter slightly J\\\\Uh,,

more

than half length of head, equaling the distance

from

vent to front of analfin.

(Fig. _1.)

,

Coloration resembling that of C. callyo- don, but with the bars

on

fi^ns

and body

often

more pronounced and

the spotted

Fig.1.—Relativesizeandposition coloration

sometimes

Seen in C. callyodon

cliSLsr

^'^^°'^^'^°^-^^''=^

wholly lackmg.

Dark

above, with

an

in- distinct mottling of slate

and

ashy gray, the lower surfaces paler; pectorals with

two

or three

dusky

cross- bars; dorsalwith twelve

dusky

bars,the posteriornineorten extend- ing across the

body and on

^{the anal fi.n;} caudal with three or four irregular bars; in

many

specimens thebars are present only

on

the fins,leaving the

body

auniform olivebro^^^lorslate color,

and

in

some

individuals even the bars

on

the fins are very indistinct or wanting.

In addition to the type, 31 specimens

were

taken in the tidepools at MilneBay, Simushir Island.

2.CYCLOGASTER(NEOLIPARIS)SIMUSHIR^,newspecies.

Plate41,fig.2.

Type.—

Cat.No.73327,

U.S.N.M. A

male, 138

mm.

in totallength,

from

Milne

Bay,

Simushir Island, Japan.

Closely related to C. greenei, differing in the

more numerous

fin rays, intheshapeof the

head and

body,

and

inthe ventbeing nearer the diskI

Measurements

ⁱⁿ hundredths of length exclusive of caudal fin (120

mm.): Length

of

head

29.5; depth opposite front of disk 18.5;

depthopposite gill slit25; greatest width of

head

24; greatest depth of

body

25; depth of caudal peduncle 7; interocular width 12.5;

NO.1907.

NEW CYCLOOASTERID FISHES— GILBERT AND BURKE. ₃₅₅

diameterof eye 4; "width at angles of

mouth

^17..'3; distance

from

tip of snout to

end

of maxillary 15; length ofgill slit 7.5; distance

from

tip of snout to disk 18; to anus 38; diameter of disk 11; distance

from

disk to anus 0.5;

from

anus to front of anal

fm

0.5; length of longest pectoral ray 10.5; of shortest ray in notch 8.

Dorsal 44; anal 34; pectoral 40.

Body

^{deepest in} front of dorsal,

tapermg

rapidly

backward from

middle of second dorsal.

Head

thick, only moderately depressed,

its widthgreater than its depth; cheeksswollen; maxillary reacliing vertical

from

posterior

margin

ofeye; anteriornostril in athick tube

;

posterior nostril without a tube. Teeth

weakly

trilobcd, in about ten obliquerows inthe half ofeachjaw. Gillslit extending

down

in front offour pectoral rays.

Firstseven dorsalraysseparated off

by

a deep notch; caudal trun- cate; anal joined to caudal for not

more

than one-seventh of the length of the caudal; dorsal only slightly comiected to the caudal;

pectoralnotched, the lower lobe consistingof seven rays

and

extend- ingslightlypastdisk.

Vent

separated

from

disk

by

diameterof disk.

Colorolive

brown above and on

sides,paler below; fins

unmarked,

colored the

same

as the body.

In addition to the type,

two young

cotypes 28

mm.

long were obtained

m

^the

^same

^{locality. In these the vent is}

much

farther back, almost immediatelyin front of the originof the anal.

One

of the cotypes has largo scattered papillae,

most numerous on upper

anterior part of trunk.

These may

develop

"thumb-tacks"

in adults.

3. CYCLOGASTERTESSELLATUS,new species.

Plate41,fig. 3.

Type.—

C&i.

No.

73328,U.S.N.M., a male, 186

mm.

^long,

from

sta- tion 5042, off the southeast coast of

Hokkaido,

westof

Erimo

Saki

;

depth 61 fathoms.

Measurements

in hundredths of total length exclusive of caudal

fin (158

mm.): Length

of

head

26; depth opposite front of disk 16;

opposite gill slit 20; greatest width of

head

17.5; greatest depth of

body

23;depthofcaudal peduncle3;interocularwidth11.5;diameter ofeye 4.5;width at angles of

mouth

12.5; distance

from

tip ofsnout to

end

of maxillary 13; length of giJl slit 11.5; distance

from

tip of snout to disk 15; to anus 37; diameter of disk 8; distance

from

disk to anus 14;

from

anus to front of anal

fm

4.5;

from

tip of snout to front of dorsal 28; longest pectoral ray 24; longest ray oflower lobe 18; shortestray in notch 11.

Dorsal 48; anal 37; pectoral ^35.

Body

elongate, slender.

Head

pointed, broad

and

flat between the eyes; occiput not swollen; depth of heail greater than width.

Snout

depressed, rising gradually, projecting

beyond

the premaxil-

356 PROCEEDINGS OF THE NATIONAL MUSEUM.

^vol.42.

lariesfornearly the diameterofthe eye;lower

jaw mcluded;

anterior nostril in a very short tube; posterior nostril reduced to a small pore; maxillary reaching vertical

from

middle of eye.

Teeth

in

moderate

bands, arranged in about fifteen oblique rows in the half of thelower

jaw and twenty

in the half of the upper. Gill opening large, extending

down

in front of sixteen pectoral rays. Caudal elongate, slightly rounded, joined to dorsal

and

anal for tliree- fourths its length, the rays evenly graduated, the union without notch. Pectoral notched, the lowerlobe consisting of five rays

and

reaching

more than

half

way from

disk to vent.

Disk

rathersmall, widely separated

from

the vent,

which

is butlittle in

advance

ofthe origin ofthe anal. (Fig. 2.)

Top and

sides of

head and body

dusted

and marbled

with dark

brown; abdomen and

thi'oat pale or pinkish; pectoral a little darker than the body, with irregular

dusky

bars above; anterior

margin

of dorsal withdark blotches; posteriorly these are replaced

by

darkbars

which

zigzag obliquely

downwards

a\\\\\u!| across the fin; anal a little darker

~

I

~~^ than dorsal, crossed

by

about seven

,:':'':^ pairs of

narrow dusky

bars, inclos-

i j ing each a wider light bar; caudal withthree oblique bars; peritoneum _-^ silvery, with darkspots.

*"

' " '^'1^

Resembling

C. pulchellus in the

Fig.2.—RelativeSIZEANDPOSITIONOFVENT ^• i^ ^ ^„+* „ i,„+, „ j-i,„ , „j-*

AND DISK-OFcyclogastektessellatus.

^ido

counectiou

bctwcen

the verti- cal fms,but thegill slit

much

wider.

In addition to the type,

two

cotypes were taken ^at station 5041 inthe

same

locality, at a

depth

of 140 fathoms;

and

one at station 4867,in the Sea ofJapan, offthe coast ofKorea, depth 150fathoms.

4. CYCLOGASTERAGASSIZII(Putnam).

LiparisagassizuFvTi^AM,Proc.Amer.Ass.Adv.Sci.,1874, p.339(GulfofTartary),

Abundant

in tidepools

and

alongshorethroughout northern Japan.

It

was

taken but once with the dredge, at station 4808, Straits of Tsugaru,Japan,atadepthof47 fathoms. Like

many

othernorthern shore forms, its southern distribution is determined

by

that of the cold current,

which can

be detected a little

beyond Matsushima

Bay.

5.CYCLOGASTERFRENATUS,newspecies.

Plate42,fig. 1.

Type.~C&t. No.

73329, U.S.N.M., 94

mm.

long,

from

station 4809, in the Sea of Japan, off the northwest coast of

Hondo;

depth 207 fathoms.

Measurements

in hundreths of total length, exclusive of caudal

fin (78

mm.): Length

of

head

25;

depth

opposite front ofdisk 14.5;

oppositegillslit 20; greatest

width

of

head

18;greatestdepthof

body

NO.1907.

NEW CYCL00A8TERID FISHER— OILDERT AND BURKE. 357

25; depth ofcaudal podimclc G; intcrocular width 8; diameter ofeye 5.5; width at anglesof

mouth

11^; distance

from

tipofsnout to

end

of maxillaiy 9; length of gill slit S; distance frojn tip of snout to disk 14; to anus 32.5; diameter of disk 10; distance

from

disk to anus 7;

from

anus to front of anal fin 15; distance

from

tip ofsnout to front ofdorsal 32; longest pectoral ray of upper lobe 17; oflowerlobe 17;

shortest ray in notch 10.

Dorsal 37; anal 31; pectoral 34.

Body

not deep, compressed.

Head

rather slender

and

pointed, compressed; interorbital flat; cheeks not swollen; sides of

head

nearlyvertical.

Mouth

small, narrow, vrithlittlelateralcleft; maxil- lary reaching vertical

from

front of eye. Teeth stout, strongly trilobed, about eight rows in the half of each jaw.

Snout

rather deep, slightly overlapping the

mouth.

Posterior nostril with a raised rim,

which

is produced into a short flap in front; anterior nostril in alongtube, wliich

when

^depressed nearly reaches posterior nostril. Gill opening extending

down

in front of the

upper

nine pectoral rays.

Anteriordorsalrays ratherstifl',thefirstsixunsegmented.

Caudal

truncate, consisting of ten stout rays; dorsal

and

anal connected to caudal for a short distance, the anal connection a little greater than the dorsal; last rays of dorsal

and

anal connected to their tips to the caudal. Diskrathersmall, with abroad flap.

Vent

closebeliind disk, distant

from

it less than the diameter of the disk. Pectoral notched, the lower lobe ofseven rays, its tip reachingvent.

Coloration: Skin with fine dark

brown

dots,

more numerous on

the topofthehead, absent

from

the

abdomen;

adarkstreakrunning forward

and downward from

the ej^e; dark spots extenduig back-

ward from end

of maxillary; pectoral with a broken dark bar near base, the remainder of fin pale; about seven faint duslvy bars

on

dorsal

and

^anal, the posterior bars extending farther on peduncle; a

narrow

black baracross base of caudal, a second, less

marked,

two-

tliirds the distance to the tip. In ^life, the fins

and

the lower

jaw

light red, the

body

grayish.

Apparently related to C. cyclopus, but not closely so,

and

easily distinguished

by

theshapeofthe

head and

the

number

ofthefinrays.

Only

the type taken.

6.CYCLOGASTERTANAKLffi,newspecies.

Plate42,fig.2.

LiparisoivstoniTanaka,Jouru. Sci. Coll. Imp.Uiiiv.Tokyo,vol.23, 1908, p. 45, pi. 3, fig.2; not Trismegislu^owstoiiiJordan andSnyder.

Type.

—

360

mm.

^long,from VriesIsland,

Sagami

Sea, Japan. Pre- sented to Stanford I'niversity

by

Shigeho Tanaka, of the Imperial University of Japan.

Measurements

in hundredths of total length exclusive of caudal fin:

Length

of

head

28; ilepth oppositegill slit22; greatest width of

358 PROCEEDINGS OF THE NATIONAL MUSEUM.

^vol.42.

head

22; greatest depth of

body

24; depth of caudal peduncle 4.5;

interocular-width 13; diameter^ofeye3; width atanglesof

mouth

18;

distance

from

tip of spout to

end

of maxillary 14; length of gill slit 10.5; distance

from

tip of snout to disk 13; to anus 39; diameter of disk 11.5; distance

from

diskto anus 15;

from

anustofront of dorsal 31; longest pectoral ray 25; longest ray of lower lobe 15; shortest pectoral ray 15.

Dorsal 45; anal 34; pectoral ^41.

Body heavy

anteriorly,notverydeep.

Head

broad

and

depressed, about as broad as deep, nearly quadrate in cross section; profile almost straight

from

occiput to snout.

Snout

depressed, broadly rounded; upper

jaw

projecting so that the

upper band

of teeth is

partly exposed.

Eye

very small. Anterior nostril in a short thick tube, posterior with a slightly projecting rim.

Mouth

very broad,

its angle behind vertical

from

anterior nostril; maxillary reaching vertical

from

middle of eye. Teeth strongly trilobed, in about 30 oblique rows in the half of the upper jaw; outer teeth smaller

and

not so strongly trilobed. Gill slit extending

down

in front of 11 pectoral rays.

Caudal slightly rounded, the dorsal

and

anal joined with its basal two-thu'ds,thelast dorsal

and

anal rays shortened, forming

rounded

lobes. Pectoral broad, not notched, thelowerlobe broadlyrounded,

its upper rays not shortened. Disk large, oval, its anterior edge

below

the e^^e.

Vent

^farback, nearer anal

fm

than disk.

Coloration: Pale gray with

dusky

^mottlings

and

^{stripes along} base of dorsal

and

top of body;

margin

of dorsal, anal, pectoral,

and

the caudal dusky; posterior surface of pectoral dusk}^; free tips of all

rays whitish; awhiteline

where

the sldnofthe

body

isfirmlyattached to the vertical fins, this

most pronounced on

the caudal.

Thumb-tack

prickles

on

the top

and

sides of

head and

bod}^, apparently absent

on

throat

and abdomen.

C. tanakx can be distinguished

from

C. owstoni

by

the broad de- pressed snout.

They

both agree in the character of the caudal

and

pectoral fhis,

which

distinguish

them from

the other speciesof the genus.

Fivespecimensof thisspecies

were

inthecollectionsoftheImperial University ofJapan, three ofthese

from

the vicinity of Vries Island,

Sagami

Sea, taken in the spring of 1906, the other

two

probably

from

the

same

locality.

An

additional specimen has been recently taken at Fusan, Korea,

by

Dr.

David

Starr Jordan.

7.CYCLOGASTER OWSTONI(Jordanand Snyder).

Trismegistus owstoni Jordan and Snyder, Smiths. Misc. Coll.,vol. 45, 1904, p.238,pi.58(SagamiBay).

No

additional specimens were secured of this interestmg species,

which

is Ivnown only

from

the type,

and from

a specimen

from

the

market

at Nagasald recorded

by

Schmidt.*

1Proc.U.S.Nat. Mus.,vol. 28, 1904, p. 189.

xo.1907.

XEW CYCLOGASTERID FISHES— GILBERT AXD BVRKE. 359

8.CYCLOGASTER OCHOTENSIS^(Schmidt).

Plate 12, fig.3.

LiparisochotensisSchmidt,PiscesMariumOrientaliuni,190-1,p.103(OkhotskSea).

Tlio following description will servo for comparison with other allied species of our collection:

Head

3.3 in length; depth 2.8. Dorsal 45; anal 30; pectoral 42.

Eye

8.8 inhead; snout 2.6; gill sht2.2; disk _2.5; pyloric cseca 23.

Body heavy and

deep anteriorly, ta])ering rapidly to the caudal, the greatest depth at shoulders.

Head

short

and

deep, the occiput slightly swollen, the profde steep; interorbital space broad; the distance

between

the anterior nostrils contained 3.6 times in the head.

Snout

short

and

broad,risingabruptly; jawsequal. Anterior nostrils in a

prominent

tube; posterior nostril -with a raised rim.

Eye

^small, round.

Mouth

broad; maxillary reaching vertical

from

just behind the eye. Teeth slender,

weakly

trilobed, in a broad band, arrangedin about 25obliquerowsinthehalf ofeachjaw, those of the anterior series minute. Gill slit broad, extending

down

in front of 18 pectoral rays.

Anterior dorsal rays buried in a gelatinous tissue; distance

from

tip of snout to dorsal 2.8 in body. Caudal broad, slightly rounded.

Dorsal

and

anal joined to basal half of caudal, the anal a little

more

widely joined than the dorsal; last rays of both dorsal

and

anal shortened, forming

rounded

lobes, pectoral broad, notched; the lower lobe thickened, vntli partly free ra3's reaching two-thirds the distance

from

disk to vent. Disk nearly round; distance

from

tip of lower

jaw

to disk 8.4 in length;

from

disk to origin of anal 4.8.

Vent

separated

from

disk

by

a little less than diameter of disk.

Coloration:

Top

of

head and

sides

and back

of

body

with bluish black stripes, these darker along the edges

and

sometimes dividing posteriorly to

form two

stripes; lower parts of

body

pale;

margin

of pectoral, doi-sal,

and

anal bluish black; caudal blackish; lower lobe of pectoral not so dark as the upper.

Thumb-tack

prickles

on

top of

head and on

back; those

on

sides smaller; lower surfaces smooth.

This species differs

from

C. agassizii in the increased

number

of pectoral rays.

The

description is

from

a female sj^ecimen 465

mm.

long,

from

station 5008, in

Aniva

Bay, Sagalin Island, at a depth of 40 fathoms.

Young

specimens were taken in the

same

locality at stations 5010

and

5012, depths 21

and

42 fathoms;

and

others

from

stations 5016, 5017, 5020, 5021,

and

5023, off the eastern coast of Sagalin, at depths of 64 to 75 fathoms.

As

in certain other species of the genus, C. ochotensis displays distinct color patterns. Certain of our specimens are conspicuously

marked

with longitudinal black streaks, others with light blotches of var3'ing size

and

shape, narrowly

margined

with dusky, while the majority are gray, finely spotted or variegated with darker.

360 PROCEEDINGS OF THE XATIONAL MUSEUM.

^vol.42.

9.CYCLOGASTERINGENS, newspecies.

Plate43,fig.1.

Type.—

C&t. No. 73330,

U.S.N.M. A

^male, 490

mm.

long,

from

station 4863, off the coastof Korea, in the Sea ofJapan; depth 250 fathoms.

Measurements

in hundredths of total length, excludhig the caudal

fin (410

mm.): Length

^of

head

31.5; depth opposite front of disk 25.5; opposite gill slit 30; greatest

width

of

head

24.5; greatest depth of

body

30; depthofcaudalpeduncle 4; interocular

width

12;

diameterofeye 3;

width

at anglesof

mouth

18.5; distance

from

tip ofsnout ^to

end

ofmaxillary 16.5; lengthofgill slit 14; distance

from

tipofsnoutto disk 18.5; toanus 38.5; diameterofdisk 11; distance

from

disk to anus 9.6;

from

anus to frontof analfin 8.5;

from

tip of snout to front of dorsal 34; longest pectoral ray 22; longest ray of lowerlobe 18; shortestrayin notch.

Dorsal 45; anal 37; pectoral ^42.

Body

deepest at union with head, rather elongate

and weak

pos- teriorly

and much

compressed;

head

heavy, occiput swollen, profile rising very obliquely

from

snout; cheeks slightly swollen; snout short, deep, rising abruptly; upper

jaw

projecting so that nearly all

the

upper

teeth are exposed; anterior nostril in a short

wide

tube;

eye small;

mouth

wide; maxillary reaching vertical

from

slightly behindeye; posterior teeth slender, depressible

and weakly

trilobed, the anterior teeth

becoming

progressively smaller, those along the front of each

jaw

extremely minute; about 20 oblique rows in the half of thelower

jaw and

30 inthe upper. Gillslit wide, extending

down

in frontof 16 pectoralrays.

Origin ofdorsalslightly behind tip ofgill flap. Caudal injured, its

union withdorsal

and

analapparentlyequalto halfor

more

thanhalf of its length. Pectoral notched, the lowerlobe reaching two-thirds the distance

from

the disk to the vent. Diskratherlarge, separated

from

vent

by

a distance nearlyequal toits

own

diameter.

Body and

verticalfins dusky, with bluish blackmottlings;

margin and

posterior surface of

head and body

pale.

Minute thumb-tack

prickles sparsely distributed

on

top of head,

on

dorsal fin,

and on

sides of body; lower parts, including anal fui

and

a strip along its base, the terminal part of snout, lower part of cheeks

and

opercles, the pectoralfin

and

its axil naked.

This species differs

from

C. ocliotensis in having a shorter

jaw and

a longer slenderer body. It appears to

have more

oblique series of teeth in the

upper jaw

than in the lower (30-20), while C. ochotensis has about the

same number

(25) in each jaw; but this

may have

little significance, as in these species the total

number

of rows in adults has been increased

by

the

more

orless irregular intercalation ofsecondaryrows. Ingensisadeep-waterspecies (250fathoms)

from

offthe

Korean

coast.

The form

is

more

slender

and

the textureless

NO.1007.

NEW CYCLOGASTERTD

FI^JIEfi—aiLBERT

AXD BURKE. 361

firm than in C. ochotensis,

which

is a subHttoral _species

known

only from Sagahn. In other structural details, the

two

species agree closely.

Only

the type

known.

KEY TO JAPANESE SPECIES OF CAREPROCTUS.

a^ Caudal deeply andsharply forked cypselums, 10.

a: Caudalnotdeeplyf()rkod-<>ithergently conrave, truncate, orfonvexly rounded.

hK Headandbodyrough with thirk-setmultilid_prickles.

c\ Lengthofhead more thanone-fourth thetotallength;peritoneumsilvery,not dotted withl)lack.

</'. Diameterof diskaboutone-tenth length ofhead; bodyslender, its depth

nnichlessthanone-third thetotallength rastrinus, 11 d". Diameterof diskaboutone-sixth length ofhead; bodydeeper, itsdepth

muchmore than one-third thetotallength acanthodes, 12 c2. Lengthofhead lessthanone-fourth thetotal length; diameterofdisk about

one-ninth the lengthofhead; bodyslender, thedepth lessthanone-third

.,

^

^{thetotallength} trachysoim, IZ.

b. Meadand bodysmooth,orwith widelyscatteredsimpleprickles, f'. Gillslitextending belowlevel ofupperi>ectoralray.

/'. Teeth coarse, trilobed; gill slit extending to opposite third pectoral

^y-_{• :} rhodomelas, 14.

p. ^Teethsimple; gill slitextendingtooppositefifthorsixth pectoralray.

pellucidua, 15.

e. Gill eht usually confinedtoareaabovebaseof pectoral, rarelyextending tolevel offirstorsecondpectoralray.

^^ Diameterofventral disklessthanone-fourth lengthofbead.

h}. Teethtrilobate,someofthe outer teeth simple; inlife,transparent, witha reddish tinge, slightlydusky posteriorly; lower pectoral

lobeshort _;...segaliensis, 16.

K^. Teethsimple.

iK Uniform jet-black, including gill ca\'ity and peritoneum; dis- tancefrom disktoanusnearly twice thediameterofdisk.

bathycoetus,17.

i*. Notwhollyblack.

h\ Distance from disktoanus slightlygreater than diameter of disk; lower lobeofpectoralscarcely reaching vent.

roseo/itsciis, 181 F. Distance from disktoanushalfdiameterofdisk; lowerpectora.

lobelong,extendingbeyondorigin ofanalfin coUetti, 19.

g-. Diameterofventral diskmorethanone-fourth lengthofhead.

/'. Teethtrilobate(weaklyso in C. sinensis).

mK

Body deep and compressed, the depth more than one- fourth the length; texturesomewhatgelatinous.

sinensis, 20.

VI-. Body elongate, the depth not exceeding one-fifth the length,

n'. Headmorethanone-fourth the length...pycnosoma,21.

n^. Head^lessthanone-fourth the length nirilanus, 22.

P. Teeth simple(afew withweaklobesin C.homoplerus).

o\ Pectoralindistinctlynotched, noneofthe lower rays extending beyondthe disk homopterus, 23.

o2. Pectoral di.stinctly notched, wnth well-developed lowerlobe.

pK ^Peritoneumjetblack entomehs, 24.

p^ ^Peritoneumsilvery,with scattered blackdots.

entargyreus, 25.

362 PROCEEDINGS OF THE NATIONAL MUSEUM.

vol.42.

10.CAREPROCTUS CYPSELURUS(JordanandGilbert).

PrognuruscypselurusJordan andGilbert,Fishes of Bering Sea. ReportFiir- SealInvestigations, Part3,1899, p. 478, pi.77 (BeringSea).

One

specimen 260

mm.

ⁱⁿlength

from

station 5015, in the southern part ofthe

Okhotsk

Sea, at a depth of510 fathoms.

Color in life: Greater part of head, body,

and

fins deep purplish indigo, the anterior partofthesidesalmost clear red, withlittleblue;

head

again

becoming

deeper blue, but with

more

red than the pos- terior part of the trunk; basal portion of

upper

pectoral rays also with

more

reddish.

U.CAREPROCTUSRASTRINUS, newspecies.

Plate43,fig. 2.

Type.—

Cat.

No.

73331,

U.S.N.M. A

female, length285

mm.

long,

from

station 5026, in the southern part of the

Okhotsk

Sea, depth 119 fathoms.

Measurements

in hundredths of length without caudal (259

mm.)

:

Length

of

head

27.5; greatest width of

head

17.5; interocular width 16; wadth at angles of

mouth

15;

\^\\v\\\\llll!', distance

from

tip of snoutto front

^A\Ml'l||r~~^ of orbit 11; diameter of eye 5.5;

distance

from

tip of snout to

end

of maxillary 14; lengthof gill slit

8; greatest depth of

body

42^;dis- tance

from

tip of snout to front of disk 14; to anus 17.2; to front of anal fin 38; tofront ofdorsal29.5;

Fig. 3.— Relativesizeandposition ofvent t ^, c t i n r t ± p

AND DISKOFCAREPROCTUSRASTRINUS. diametcr of disfc 2.5;distance

from

disk toanus2^; longest pectoralray of upper lobe 15; of lower lobe 29; shortest ray 8.

Dorsal59; anal 52; pectoral 37;caudal8;p3doriccseca 34.

Body heavy and

deep anteriorly, compressed, tapering rapidly to caudal.

Head

^short, with short blunt snout; profile evenly rounded, the anterior profile of snout vertical; interorbital \\dde, nearlythrice eye; cheeks vertical;jaws equal; nostril in a short \\dde tube

on

lowerline of eye.

Mouth

^wide; maxillary reaching vertical

from

slightly behind eye.

Teeth

stout, blunt, simple, arranged in about 11 oblique rows in the half of each jaw. Gill slit extending

down

in front of four or five pectoral rays.

Origin of dorsal far forward, a ^little in front of gill slit. Caudal broad, slightly rounded, joined to anal a little

more

tlian half its

length;

no

dorsal oranal notch. Pectoral deeplynotched;the upper lobereachingpast fTontofanal^;thelowerlobeofeightgreatly exserted rays, the longest reaching front of anal

and

nearly as long as

head

NO.1907.

NEW CYCLOOASTERin FISUESi—CILBERT AND BURKE. 363

(shorter in cotypes). Disk small, broadly triangular in the adult, this scarcely evident in the voiuiger cotypes; vent close beliiud disk. (Fig. 3.)

Multifld priclvlesscattered thickly over

head and

])ody.

.Color in life, light yellowdsh pink or

salmon

color, nearly white

on

belly

and

underside ofhead;

peritoneum

silvery.

Thisspecies is notclosely related to the otherspecies ofthegenus;

it is readilydistinguished ])y the short

heavy head and body

and the coloration.

Two

cotypes

from

station 5021, off

Cape

Patience, Sagalin, depth 73 fathoms.

12. CAREPROCTUS ACANTHODES,newspecies.

Plate43,^fig. 3.

Type.—

Qui.

No.

73332,

U.S.N.M. A

female, 89

mm.

long,

from

station 4997, in the Gulf of Tartary;

depth

318 fathoms.

Measurements

in hundredths of length mtliout caudal (81

mm.):

Length

of

head

29.5; gi*eatest wddtli of

head

at cheeks 17; interocular wddtli at angles of

mouth

15.5; dis-

tance

from

tip of snout to front of AW\\\lr, orbit 12.5; diameter of eye 8; dis-

tance

from

tip of snout to

end

of maxillary 12.5; length ofgill slit 5.8;

greatest depth of

body

27; distance

^

from

tip of snout to front of disk 12.8; to anus 17; to front ofanal fin 35; to front ofdorsal 28; diameterof disk 5; distance

from

disk to anus

1.3; longest pectoral ray of

upper

fig. 4.— relative size and position op

lobe 21.5; of lower lobe 12.8; short- ^{^'^^'^ ^^°} ""'^"^ ""^ caeepeoctus acan-

, ' ' thodes.

estrayinnotch 5.5.

Dorsal _53; anal4G; pectoral 33; pyloric ^{ca^ca} 19.

Body

moderately deep, compressed,

much more

elongate than in C. rastrinus.

Head

very wide, blunt

and

heavy, cheeks vertical, interorbital broad

and

flat.

Snout

short, wide,

and

deep, scarcely protruding;jaws equal;nostrilin ashort broad tubein front oflower

Q.(\gQ> of pupil; eye moderate, the lower half sUvery.

Mouth

broad;

maxillary reaching vertical

from

j^osterior

margin

of pupil. Teeth short, simple, arranged in 10 or 11 oblique

rows

in the half of each jaw. Gill slit extending

down

in front of

upper

pectoral ray, or in

some

cases confuiedtoarea

above

baseoffin,thisvariationapparently

due

to looseness of the integument.

Origin of dorsal

above

tip of gill flap; anterior dorsal rays buried in a gelatinous tissue. Caudal truncate, joined to anal for nearly halfitslength; no dorsal or anal notch. Pectoral notched, the ujiper lobereachingpast front ofanal;lowerlobeof six rays, short, reaching

364 PROCEEDINGS OF THE NATIONAL MUSEUM.

^tol.42.

little past vent.

Disk

small, deeply cupped, appearing

somewhat

triangularin the largerindividuals; ventclosebehinddisk. (Fig.4.)

Multifidprickles scattered over

head and

body, absent

on

^lips

and

chin, fewor

none

nearthe caudal.

Sldn transparent, finely dusted with

dark brown

dots,

body dusky

along the back,

abdomen

silvery, lower half of eye

and

peritoneum silvery.

In appearance this species resembles C. trachysoma, but can be distinguished

by

the color of the peritoneum, the sliorter pectoral lobe,

and

thelarger disk.

Four

cotypes were taken\viththe type.

13.CAREPROCTUS TRACHYSOMA,newspecies.

Plate44, fig. 1.

Type.—Csit.

No.

73333,

U.S.N.M. A

male, 266

mm.

long,

from

station 4982, in the northern part of the

Japan

Sea; depth 390 fathoms.

Measurements

in hundredths of length mtliout caudal (243

mm.):

Length

of

head

22.2;gi-eatest width of

head

at cheeks 14; interocular width 12;

width

at angles of

\>\\\\Vy-; - niouth 11; distance

from

tip of snout to front of orbit 7.1; di-

ameter

of e^'e 5; distance

from

tip of snout to

end

of maxillary 11^;length of gill slit 6.5; great- est depthof

body

(notincluding verticalfins) 30; distance

from

tip of snoutto front of anal fin 32.5; to front of disk 11.3; to anus 14.5; to front of dorsal 25.5; diameter of disk 2.3; distance disk to anus 1.5; longest pecto- ral ray of

upper

lobe 16; of lower lobe 23; shortest ray in notch 8.

Dorsal 60; anal 55; pectoral 31 ^(fin counts

from

cotype).

Body

deep

and

compressed.

Head

short, deep, compressed, tlie

anterior profile steep, the sides vertical.

Snout

short, blunt, rising rapidly, not projecting; upper

jaw

slightl}^ protruding

beyond

the lower; nostril in a short tube in fi'ont of eye, below level of pupil.

Mouth

broad, with considerable lateral cleft, the maxillary reaching vertical

from

behind pupil.

Teeth

simple, short, in

narrow

bands.

Gill slitextending

down

in front of fivepectoralraysin type^;in

some

of thecotypes not extending

down

so farin front ofthe fin.

Origin of dorsal

above

opercular flap, the rays increasing gradu- allyin length

and

buried in a gelatinous tissue. Caudal truncate or slightly rounded, of eight rays, joined to anal for nearly half its

length; dorsal

and

analconnected to caudalabruptly, butthere is

no

Fig.5.

—

Relativesizeand positionofventand DISK OFCAREPROCTUS TRACHYSOMA.

NO.1907.

NEW CYCL0GA8TERID FISHES— GILBERT AND BURKE. 365

notch

between

the fins. Pectoral notched, the

upper

lobe reaching

tliird anal ra}'; lower lobe of eight rays, elongate, reacliingnearly to anal, in adults greaterthanlength ofhead, in

young

a littlelessthan head.

Disk

small, hidden beneath the lowerpec-

toral lobes; in adults the posterior

and

anterior V"^^^

—

"'^TiT^

partsof the flapare folded over the base of the ]' * '^ i cUsk, so tliat the width appears greater than the (.* *

"tW ^ _a

length.

Vent

closebehind disk. (Fig. 5.) /^

^"

_^^\^

Multifidprickles scattered thicklyover

head and N" •'%£/

_J

body, with the exception of the lips

and

chin;

xj^^-^'^^j

usually about 10 slender prickles clustered about

f,g.g.-sectionof skdj

a single base. (Fig. 6.) orcakepeoctustra-

Color dusky, ^faintly pinkish in life, darker

on '^Z.LlZ^r

top of

head

in the type; dorsal

and

anal posteri-

orly

and

the caudal bluish black; pectoral (hisk}' except at base;

skineverywhere dusted withfinedarkdots; peritoneum silvery, with

fine dark dots.

Twelve

cotypes were taken

from

the following stations:

Fathoms.

4814. OffSadoIsland,SeaofJapan ₄₂₉

4981. Shiruunku Bay, westcoastHokkaido 406

4982. Shiruunku Bay, westcoastHokkaido 390

4983. Shiruunku Bay, westcoastHokkaido 428

4992. Offthenorthwestcoast ofHokkaido 325

4997. GulfofTartar}^ 318

Differing

from

C. rastrinus conspicuously in the shorter head, the slenderer form,

and

the darker coloration.

14.CAREPROCTUS RHODOMELAS, newspecies.

Plate44,fig.2.

Type.—

Cat. No. 73334,

U.S.N.M. A

male, 123

mm.

long,

from

station 4958, off the

Bungo

Channel, Japan; depth 405 fathoms.

Measurements

in hundredths of length^^^thout caudal (113

mm.):

Length

of

head

19; greatest width of

head

14; interocular ^\ddth 10;

width at angles of

mouth

8.5; distance

from

tip of snout to front of orbit 6; diameter of eye 5.5; distance

from

tip of snout to

end

of maxillary 8; length of gill slit 5; greatest depth of

body

19; distance

from

tip of snout to front of disk 11.5; to anus 17; tofront of anal fin 34; to front of dorsal 23; diameter of disk 3; distance

from

(Hsk to anus 4; longest pectoral ray of

upper

lobe 15, of lower lobe 21;

shortestray innotch4.

Dorsal 56; anal 48; pectoral 31 (from cotype)^; caudal 9.

Body

elongate, slender, compressed, tapering very gradually to the caudal.

Head

sliort, flat

on

top, the sides vertical; interorbital

\\ade; occiput slightly swollen.

Snout

short

and

deep, not project- ing; nostril in a short tube in front of upper part of eye;

mouth

366 PROCEEDINGS OF THE NATIONAL MUSEUM.

vol.42.

broad, maxillaiy reaching vertical

from

middle of e3^e. Teeth very coarse, trilobed, thelateral lobes stout, nearly as long as the middle lobe, the teeth arranged in

broad

bands, not decreasing regularlyin size outward; eight ornine oblique series in half of eitherjaw.

GUI

opening extending

down

in front of three pectoral rays (in cotype, thetypemutilated).

Origin of dorsal ^slightly behind base ofpectoral; the anterior rays increasing gradually ⁱⁿ length. Caudal rather slender, the tips of the rays coiled

and

apparently free, its union with, analequal to one-third its length. Pectoral notched, the lower lobe elongate, longer than the

-^^'

"

upper

lobe, reaching nearly to the

FIG. tZrelativk size and position of anal.

Disk

small,triangularinshape, VENTANDDISK OFcareproctus EHODo- tlie flap Harrow, but little developed

^^^^^-

on

the sides anteriorly, (Fig. _7.)

Colorin spirits, dusky, jet black anteriorly,

where

the peritoneum

and

^{lining of the gill cavity}

show

through. In life, the head, body,

and

^{fuis rose red or brick red, brighter} anteriorly, except

where

underlaid

by

black. Pectoral blackish

on

inner face proximally.

A

well-marked species, distinguished in part

by

the very coarse teeth

and

the elongate lower lobe of the pectoral.

A

^singlecotype

^from

station 4980, south of

Suruga Bay;

depth 507 fathoms.

15.CAREPROCTUSPELLUCIDUS, newspecies.

Plate44,fig. 3.

j'ype.—Cnt. No.73335,U.S.N.M. Female,127

mm.

in totallength,

from

station 5048, ^off

Matsushima Bay,

east coast of

Hondo

; depth

129 fathoms.

Measurements

ⁱⁿ

hunckedths

oflength without caudal (115

mm.):

Length

of

head

27; greatest

width

of

head

17; interocular

width

17;

width

at angles of

mouth

14; distance

from

tip of snout to front of orbit 10; diameter of eye 7; distance

from

tip of snout to

end

of maxillary 15; greatest depthof

body

31^;lengthofgillsht 8;distance

from

^{tip of snout to frontof disk 16; to anus 20; to front of analfin} 36^{;tofrontofdorsal 27;} diameterofdisk 4^; distance

from

disktoanus 3; longest pectoralrayof

upper

lobe16,oflowerlobe 24; shortestray in notch 7.

Dorsal 55; anal 49; pectoral 35; pyloric ^{cseca IS.}

Body

deep,compressed,short; greatestdepth

under

origin of dorsal.

Head

wide,flatabove,thesides vertical.

Snout

short, risingabruptly, slightlyoverlappingthe

mouth;

lowerjav>^included; nostril inapromi- nent tube; eye large

and

prominent.

Mouth

wide, angle of

mouth

beliind front of eye;

maxiUary

reaching vertical

from

just in front

NO.1907.

NEW CYCLOOASTERID FISHES— GILBERT AND BURKE. 367

Fig.8.--Relative sizeandpositionok ventand DISKOF CAREPROCTUSPELLUCIDUS.

ofposterior

margin

of e3'^e. Teeth simple, ratherstout,

and

slightly curved backward, in about 10 oblique rows. Gill slit extending

down

in front of the upper five or six pectoral rays.

Origin ofdorsalfarforward, alittlein frontofgill slit, the anterior rays buried in a pseudotissuo. Caudal truncate, joined to dorsal

and

analfortwo-fifthsitslength,

the posterior

hne

ofunion abrupt but without notch. Pectoral deeply notched; the lowerlobe long, of eight deeply exserted rays

which

reach nearlyto anal

fin.

Base

of

upper

pectoralray

inaxis ofbody,

which

passesjust below eye. Disk small, trian- gular, separated

from

vent

by

slightly less than its diameter.

(Fig. 8.)

Color pale, skin transparent in life, tinged with light rose; dark

brown

dots

on body and

vertical fins; peritoneum pale.

One

cotype

from

station 5048

and

five

from

station 50-19, off

Mat- sushima

Buy, east coast of

Hondo,

in 129

and

182 fathoms.

16.CAREPROCTUSSEGALIENSIS, newspecies.

Plate45,fig. 1.

Type.—

Csit. No. 73336, U.S.N.M. 75

mm.

in total length,

from

station 5026,

Okhotsk

Sea, oflf the southern part of Sagalin Island,

m

^the vicinity of

Cape

Patience; depth 119 fathoms.

Measurements

in hundredths of total length excluding the caudal

fin (69

mm.): Length

of head 22.5;

greatest width of

head

14; inter- ocularwidth12; widthatangles of

mouth

8.5; distance

from

tip of snout to front of orbit 10; diame- terof eye 5; length of gill slit 3.8;

greatestdepthof

body

24; distance

from

tip of snout to front of disk 12.5; toanus 18.5; tofrontof anal 33; ^tofront ofdorsal 28;diameter of disk 4.3; longest pectoral ra}^ of upper lobe 18; oflower lobe 9.5;

ofshortestrayinnotch7.

Dorsal58; anal 52; pectoral^25.

Body

deep

and

compiessed, as in T'. mirahilis.

Head

compressed, sides nearly vertical; profile descending in an ^(>\

en

curve; snout not split, projecting

beyond upper

lip for two-thirds cHameter of vyo;

nostrilin a short tube; eye small.

Mouth

small

and

narrow; maxil- lary reacliing vertical

from

pupil. Teeth in broad bands, slender,

Fig.9.—Relativesize andposition orvent ANDDISKOF CaREPEOCTUSSEGALIENSIS.