annelida from bermuda

P^HT ^{V^II.}

ANNELIDA FROM BERMUDA,

COLLECTED BY

G.

BEOWN GOODE.

Professor H. E.

WEBSTER,

Of Union College, Schenectadv, N. Y.

Bull. Nat.

Mus.

No.25 20 ₃₀₅

ANNELIDA FROM BERMUDA.

Fam. AMPHINOMID^.

Hermodice

Kinherg.

Cifvers. Kong. Veteusk-Akad. ForhamL,p. 11, 1857.

Hermodice carunculata

Kinherg.

(Plato VII,Figs. 1-5.)

Nereis gigantcaLinn^us. Syst.Nat.ed. 12,vol. i,p. 1086. 1776(testeBaird).

Aphrodita carunoidata Pallas. MiHcell. Zool.p. 102, pi. viii, tigs. 12, 13. 1766(teste Quatrefages).

TereMIacarunculataGmelin. Liim. Syst.Nat., vol.i,p. 3113. 1789.

AmphinomecarunculataBiiUGifeRE. Euc. M6th., art.Ampliinome,p.46. Atlas,pi.60, ligs.6, 7. 1789(t. Baird).

AmphinomecarunculataCuvier. Diet, desSci.Nat.,art.Ainpliiiiomo, vol. ii, p.72..

AmphinomecarunculataGrube. Fam.derAnn., pp. 40and^122, 1851.

AmphinomecarunculataQUATREFAGES. Hist. Nat. des Ann., vol. i,p. 395. 1865.

AmphinomacarunculataAuDOUiXET M. Edwards. Littoral dela France,vol.^ii,p*

123. 1834.

PleionecarunculataSavigny. Syst.desAnn.,p. 61.

PleionecarunculataLamarck. An. sans Vert. 1sted., vol._{v, p.}330; 2ded.,vol.v,p.

572(t.Baird).

Pleione carunculata Cuvier. RtigneAnimal, vol. iii,p. 199, ed. Crochard,Ann61ide&

pi.8,figs. 4,4A,

Pleionecarunculata Grube. DePleiouoearuneiilata. 1837.

PleionecarunculataTueviranus. Beob. ans derZool., p. 53, pi. xi. 1839.

Hermodice carunculata Kinberg. Givers. Kongl.Veteusk-Akad, p. 13. 1857.

HermodicecarunculataBaird. Liuuean Society,Journal,Zool.,vol. x,p. 219,^pi.iv, figs. 3a,b. 1868.

Thereis aseries of shortflattened setsealong the anterior margin of the ventral ramus, from ten to fifteen in number, which seems not to have been observed.

The

dorsalsetae arequitelong, very delicate, simple, capillary.

The

ventral setae are

much

shorter than thedorsal, difler

much

in length,diameter,

and number

of teeth found along theirouterthird.

Some

are bluntly rounded

and

curved at the apex; others have

a

single blunt tooth justback ot theapex, on thesideoppositetheseries

ofteeth. 307

308 ANNELIDA FROM BERMUDA.

ECRYTHOE

Kinherg.

Ofvers. af Kongl.Vetensk-Akad. Forhandl.,p. 13, 1857.

EURYTHOE MAOEOTRICHA

Baird.

(PlateVII,Figs. G-9.)

Amphinome macrotricha Schmarda. Neue Wirbell. Tliiere,vol. i, i>art 2, p. 144, figs.

a,b, c, in text, aiidpi. xxxiv,fig. 290. 1861.

AmphinornemacrotrichaQcatrefages. Hist.Nat. desAim.vol.i, p. 406. 1865.

Euryihoiimacrotricha Baird. Liimeau Society,Journal, Zool., vol. x,_p. 225, pi. iv, figs. 5a, b. lW(i8.

Schmarda's descriptiou of this sx)eciesis very short,

and

I

am

with- out inlbrmatiou asto theoriginal colorofthespecimenssent me.

The

reference, however, is probablycorrect.

On

the anteriormargin ofthe ventral

ramus

is a series of short, flattenedsetse,6 to 9 in

number

(Fig.

S).

The

ventralsetiBarenotso

much

curvedexternally asinSchmarda's

figure.

The

collection includes a single specimen belonging to this family, too

much

injured for identification.

Fam. CHRYSOPETALID^.

BHAWANIA

Schmarda.

NeueWirbellose Thiere,vol. i, part^ii, p. 164. 1861.

Bhawania Goodei

n. sp.

(Plate VII,Figs. 10-15.)

No

good viewof thehead

was

obtained.

The

anteriorsegments curve directly forwards, embracing the

head and

reaching

beyond

it; palae

and

setaeboth projecting far

beyond

it,

and

in alcoholic specimens it

seems

impossibleto free thehead from thesurrounding^parts.

On

the ventral surface thereis an oval caruncle reaching through fivesegments, itslength about doubleits breadth.

Thepalge(Fig. 10)are broadly roundedexternally, sides slightly con- vex, attachedbya longnarrowprocess.

The

inneredgeis denticulated to near the end.

The

surface is covered

by numerous

longitudinal raised lines, of which three are wider thantheothers. All theselines,

except the outer oneof the wide lines, arecoveredwith raised scales,

whicharevery

numerous and

smallonthenarrowlines,presenting,

when

moderately magnified, theappearanceofseriesof beads.

The

external wide

band

issmooth.

Some

of the raised lines are continued on the insertion plate.

The

palae are very

numerous

; fromthemiddleline of each lateral half of the

body

they

curve—

the external, outward; the internal, inward. Fig. 10 representsone ofthepalae taken from about

Bull.No.25,U.S.NationalMuseum.

PLATE Vn.

L/g-J 4-

^

ANNELIDA FROM BERMUDA. 309

the middlelineof the

body

; passing-fromthislineontward they

become somewhat

narrower.

Feet biramous; ventral

ramus

(Fi^r. 12) alittle longer than thedor.

sal,curvedupward,taperingslightlyfrom basetoapex, bluntly

rounded

externally. Itcarries a finger-shaped cirruswhich originatesnear the baseofthe rannis. Dorsal

ramus

(Fig. 11)

somewhat

conical,truncated externally,

and

bearing a short cirrus, which arises near the center of the truncated surface.

The two

rami are very close to each other.

Setaj ofthe ventral

ramus

of two kinds, both

compound;

in the upper

I)art of the bundle from two to six, elongate (Fig. 13), delicate, with long capillary appendix; all the others

much

shorter (Fig. 14), stouter, with short appendix. Seta3 of dorsal

ramus

(Fig. 15)fromtentofifteen in number, all of one kind, thin, pointed, flattened, widest near the center; they arise from the ui)per sideof theramus.

The

anterior seg-

ments

curve forwards, forming semicircles. All the segmentsare very narrow. After the fifth

segment

the

body

hasa uniform diameter to the posterior third, after which it tapers uniformly to aboutone-half the greatest width.

The

fallingoff in width is also rapid along the

first five segments.

Color, in alcohol, palelight-yellow; ventral surfaceyellowish,orred- disli-hrown.

Body

slightly convex above; flattened below.

Length (largest specimen), ^50'"™.

Width, 3""".

Specimen oidy 10""'" in length werealso 3'""', oreven3.5'"™, in width.

Fam. POLYNOID^.

IIALOSYD]S^A

Kinherg.

OfversigtKon<i;l.Vetensk-Akad.Furliand.,p.364. 1855.

Halosydna leucohyba

{Schmarda).

(PlateVII,Figs. lG-18. PI.VIII,Figs. 19,20.)

Polyno'e Icurohyha Schmakda. NeueWirbellose Thicro, vol.i, partii,p. 153,figures iutexta,b,c, pi.xxxvi,lig.308. 1861.

Pohjnoclem-olnjhaQuatuefages. Hist.Nat.desAnn.,vol. 1,p.251. 18G5.

fAntinoiileiicoliijbaBauU). LiuneanSociety,Journal, vol. _{viii, p.} 193.

The

widthof the head,backof thebases of theantennae,exceeds the length [Fig. 10).

The

headis slightly convexabove, with acentral de- pression extending about one-half of the

way

back from the anterior margin; sidesstrongly(convex; posteriormarginstraight; bases of the lateralantenna) as long as the restof the head.

SllO

ANNELIDA FROM BERMUDA.

Thereare,probably, foureyes,butinthealcoholicspecimensonly

two

couldbe seen^; these werelateral, circular, large, on themedianline.

Antennoe smooth, cylindrical to near the apex, then tapering sud-

<lenly;

median

antenna aboutone-third longerthanthelateral.

Superior tentacular cirrus about equalin lengthtothemediananten- na; inferior cirrus aslong as thelateralantenna?.

Palpi triangular, stout,tapering uniformlytonear the end, terminat- ingin a smallconicaljirocess; their margins are scalloped,

and

their surfaces

thrown

into folds

by

deeplyimpressedlines; length aboutthat

•of thelateral antennae.

Thereare eighteen pairs of elytra.

(Schmarda

gives seventeen in thetext; in thefigure, seventeen on one side, eighteen on the other).

The

^{firstpair, circular; theothers, oval} (Fig. 18)^; slightlyemarginate alongthe anteriormargin; coveredwithsmall,white, rounded papillae

on

their exposed surface,

becoming more numerous

on the posterior elytra.

The

feetare quite stout; dorsal

ramus

(Fig. 17) minute; ventral ra-

mus

dividedinto two parts

by

slight longitudinalconstrictions; dorsal cirri arisingfrom stoutbasal articles,reaching a little

beyond

the ven- tralsetae; ventral cirriof firstpair as long as the dorsal cirri, and sim- ilarto

them

inallrespects,directedforwards. After thefirst pairthey arisefrom minute basal articles, are fusiform, reach to theend of the ventralramus.

There are from G to 10 dorsal setae (Fig. 20), short, acute, broad at 43ase,transverselyserrate. Ventralsetae(Fig. 19) stout, bi-dentate, ex- ceptthose of thefirst segment, Avhich end in asingle point.

They

are in

two

bundles,but are allof onekind.

Exposed

part of elytra, blue; covered part, grayish-white

; papillae of elytra, white; body,beneath theelytra, blue; anteriorpart of head

and

bases of elytra,blue_; posteriorpart of head with

numerous

black l)igment spots^; feet

and

ventral surface, yellowish-white; dorsal cirri

with a blackish

band

near thebase,

and

another abouttwo-thirds ofthe Avay out.

I refer the specimens sent

me by

Mr.

Goode

to Polynoe leucohyha

Schmarda,

though it will be seen that the figuresdiffer, especially those of theset:p.. Baird has doubtfully referred this species to An- tinoe

KiNBERG,

but Fig. IG

shows

that it cannot be ^{so referred.}

Schmarda

says nothing aboutthehead.

ANNELIDA FROM BERMUDA. 311

Fam. HESIONIDiE.

FALLACIA

Qnatrefages.

His.Nat.desAnn.,^{vol. ii,}p.98. 1865.

Fallacia proctochona

{Schmarda) Qtrfg.

(PlatoVIII,Fig. 21.)

Heaione proctochona Schmarda. NeiieWirbellose Tbiere, vol.i, partii,p. 79, figure ofseta in text, andpi.xxviii,fig.226. 1861.

FallaciaproctochonaQuatrefages. Hist.Nat.des Ann.,vol.ii, p.99. 1865.

At

^{first it}

seemed

thatit

would

be necessaryto institute a

new

genus for this s])ecies. Afterwards

two

minutepapilhnewere found onthean- terior angles of the head, which are doubtless rudimentary antennae.

As

theyare too smalltobeseen even with an ordinary

hand

magnify- ingglass, itis not surprising that

Schmarda

failed to mention them.

Mr.

Goode

collected ninespecimens ofthis species,

and

the

museum

of

Union

Collegehasa large

number

ofspecimens,collected

by

myself

on

thewestcostof Florida, from Sarasota

Bay

to

Key

West.

Schmarda

states correctly in the text that there are sixteen tentacular cirri; his figure

shows

but fourteen. These, like the dorsal cirri,arisefrom long cylindrical basal articles.

From

Schmarda's figurethey

would seem

to arise in alinear series; infactthey arein pairs, one above the other.

The

basal article of the ventral cirri is very short.

The

upper margin of thefoot (Fig. 21) ^is prolonged into aconical cirrus. According to

my

Florida notes the antennae arered. It is imi)0S8ible to determine fromalcoholic specimens

how many

segments bear tentacular cirri,but thereappearsto be but^one.

The

ante-anal segment hasno pedal rami,nor set«e, but merely

two

longcirri, dorsaland ventral.

The

anal segment has two long anal cirri, as long asthe dorsalcirri.

The

analopeningissurrounded

by

aseriesoflow, flattened, projections, with convexexternal margin, oval inform, abbut sixin number.

It would appearthat Schmarda's specimens

had

lost the anal cirri.

PODAEKE

Ehlers.

PoDARKE OBSCURA

Verrill.

Verrill. Invert. AnimalsofYinoyaid Sound,_{etc., p.589,}pi. xii, fig.61. 1874.

Webster. Annel. Chtet.of the Virginaiu Coast,p. 216. 1874. AnnelCliaet.of

New

Jersey,p. 107. 1880.

The

collectioncontains afew specimens

much

injured, but probably belongingto this species.

'312

ANNELIDA FROM BERMUDA.

Fam. NEREIDS.

NEEEIS

Cuvier.

Nereis

Bairdii, n. sp.

(Plate VIII,Figs. 22-28.)

The

head of this species (Fig. 22) is quite long, the anterior thirds setoff from each other

and bounded by

lines curvinginward; thepos- terior third with convexsides_; posteriormargin straight.

Eyes

not very large, circular,lateral.

Antennae about one-half as long as the head,

removed

from each other, at origin,

by

less than their

own

diameter; inserted in slight depressions of the anteriormargin ofthehead; bluntlyconical.

Palpi very long, notlarge, not tai)ering,withlargeterminalarticles, which, in alcoholic specimens, are nearly spherical.

The

buccal segment, in contracted specimens,has the

same

length as the secondsegment_; probably doublethatlength in life.

The

maxillary ring of the proboscisis short(Figs.^22-'',23)^; the parag- nathi are complete; mostly conical; arrangement, i, irregularly

Y-

shaped; ^ii,doubleseries,irregular^{; iii,}twotransverse,linearseries; iv,

numerous, irregular; v, sometimes wanting, sometimes one, two, or three, small; vi, on each side a single, narrow, elongated transverse denticle, ends rounded^; situated on elevations (Fig. 22)which

have

straightinnermargins; outermarginsstraighttonearthe anterior end,

when

theycurve inward; vii and viii in

two

series, the anteriorcom- posed ofafewlargedenticles,theposterior

more numerous and

smaller.

Tentacular cirri with stout cylindrical basal articles; the cirrithem- selves delicate; the posterior superior longest,reaching back to the eighth

segment

^; the others

much

shorter,as

shown

in thefigure.

Feetrather stout

and

short; on the anterior segments (Fig. 24) the linguliie

and

rami are nearly of the

same

length, stout, conical. Dorsal cirrus arisingfrom the ui)per margin of its lingula, stout, conical, not reaching quitetotheendofthelingula. Ventral

ramus

bi-labiate; an- teriorlip alittlelonger than the posterior. Ventralcirrusarisingjust within the baseof its lingula, delicate, Ihiger-shaped, nearlyas long as the lingula. Further back the feet undergo

some

changes.

The

su- perior lingula is enlarged(Fig. 25), the dorsal cirrus

moves

nearer the apexof itslingula,

and

on the extreme posterior feet becomes alittle

more

delicate (Fig.20.)

The

dorsalramus

becomes

smaller,

more

shari)ly conical.

The

ventral

ramus

shortens, esi)ecially its anterior lip.

The

Bull.Xo.25,U.S.National Museum.

PLATE

VIII.

ANNELIDA FROM BERMUDA.

3I.

J

ventral liiigularetains its leujitli but loses in diameter.

The

ventral cirrus remains unclianged. Other specimens, certainly belonging to this species, have the feet

more

delicate, the dorsal

and

ventral cirri a

triflelonger. (Figs. 24'^, 2G".)

Anal

cirritilitbrm, aslong as thelast ten segments.

In the dorsal

ramus

there are from O-IO setie (Fig. 28) with long delicate appendix, the terminali>ointsofthestemequallylong. These

setSB formthe upperpart of the ventral bundle, while its lower part is

made up

of falcate setae, appendix short (Fig. 27),terminal i)ointsof stem very unequal in length.

Body

convex above, slightly convex below; of nearlyuniform width for the anterior three-fourths; tapering slightly along the jjosterior fourth, but ai)pearing^to retain a uniform diameter, on account of the lengthening of t!ie feet.

A

few of the anterior segments also taper slightly.

Length, 35-50""".

Width,

3-4""".

Number

of segments, 50-80.

Kerkis

(tBAculis, n. sp.

(PlateIX,Figs. 29-35.)

Head

wide (Fig. 29), slightly ctmvexlaterallyand above, alittlecon- cave behind, produced in front to form the bases of theautennie.

Eyes

q,uitelarge,placed well in front; thoseon either side nearlyin contact.

AntennfBwithlongcylindrical basal articles,produced fromthe head, iustwithin the anterioreyes; theyare long, conical.

Palpi longand stout, curved inward near the base; terminalarticles quitelong; in contracted specimens they fall a little shortof the an- tennie.

Proboscis

and

jaws not seen.

On

thespecimen tigured,which

was

otherwise in good condition, the posteriorsuperiortentacularcirri were bothlost.

On

anothers})ecimen,

much

injured, this cirrus remained,

and was

found to be very long, reaching back to thethirty-fourth segment, beingnearly three times as long as the anterior superior cirrus, which reaches to tlie twelfth seg-

ment

; the inferior cirri arenuich shorter.

Buccalsegment produced forwardalongitsanteriormargin,encroacli- ing a littleon the head; its length, in alcoholic specimens, is about thatof the next segment.

314 ANNELIDA FROM BERMUDA.

Tlie dorsal cirri are very^long

and

delicate; tliey havea stoutbasal article, which, on theanterior segments, is

merged

in the baseof the upperlingula (Fig. 30); further back the lingula has theappearance of arising from the base of the cirrus (Figs. 31, 32),

The

dorsal cirri increasein length gradually, backward,

and

appear to gain

much more

than theyreally do,

owing

to theshortening of the other parts of the foot.

On

the anterior segments thefreeportion of the ux)per lingula (Fig.

30) is about one-third as long as the dorsal cirrus, delicate, conical.

The

np])er

ramus

is as long as thefree part ofthe upper lingula,but

falls a little short of its apex; in form it is like the lingula.

The

ven- tral

ramus

is bilabiate, theanterior lip

much

thelongest, conical,

and

minute atextremity _{(Fig. 30);} basal three-fourths stout, with strongly

€onvex

sides.

The

^{posterior lip} is very broad, completely concealing the base of the anterior lip in a posterior view (Figs. 30, 32); sides nearly straight, apex bluntly

and

irregularl}- rounded.

The

inferior lingula is long, conical, swollen at base.

The

ventral cirrus arises

some

distance within thebase of the ventrallingula,

and

reaches nearly to itsai>ex; it is very delicate, conical.

There isa progressive diminution in size of allparts connected with thefeet from before backward, with the exception of the cirri; the lingulae, especially,

become much

smaller, falling short of the rami;

but the cirri elongate, the ventral cirrusfinally reaching

beyond

both lingula

and

ramus.

The

setse are of three kinds^: those of the dorsal

ramus

for the

most

part withdelicate capillary appendix; the points of the stem nearly equal in length _{(Fig. 33)}; with these, inthe lower part of the bundle, a few^{falcate setse} (Fig. 35)^; in the ventral

ramus

thereare

two

bundles of ^setjc; theupper bundle is

composed

mostly of setae withappendix similar tothose of the first kind, but with one ofthe terminal points of thestem

much

longerthan the other_{(Fig. 34)}; there are also a few of the other

two

forms; theseta; of the lowerbundle are mainly falcate (Fig.35), withalso a few similar to Fig. 34.

Anal

segment simple, cylindrical; anal cirri as long as the dorsal

cirri,

and

like

them

in all respects.

Body

stronglyconvex above; slightlyconvex below; taperingalittle

along a fewoftheanteriorsegments,

and

alsoalong theposterior third.

Length

ofonly entirespecimen, GO'

Width, 4.5""".

Number

ofsegments,92.

tmm

Bull.Ko.25,U.^vS.NationalMiisuiin.

PLATE

IX.

ANNELIDA FROM BERMUDA. 315

Fam. EUNICID^.

EUlsHCE

Cuvier.

Eunice mutilata,

n. sp.

(Plate IX,Figs.3G, 36a-rf—40.)

This speciesis represented in Mr. Goode's collection

by

an anterior fragment

composed

of 39 segments, length 30'"°';

and by

a posterior fragment, 180 segments, length 90""". These

may

have belonged to the

same

specimen, but do not

make up

the whole of anyspecimen, an intermediatepart, of

unknown

length,being lost.

The

head isdistinctly

and

deeply bi-lobed.

The

antennie ratherdelicate, cylindrical, smooth, bluntly rounded at apex;

median

antenna3.5'"'" inlength, reaching back tothemiddle of thefifth (third setigerous) segment; inner pair,length 3'""'; outer pair a

mere

trifle shorterthan theinner.

Eyes

small, black,circular,between the bases of the pairedantennae.

Buccal segment equal in length to the three segments followingit,

taken together; second segmentalittle shorterthan tlie third.

Tentacularcirri as longas the buccal segment, conical, apex blunt.

The

branchiae beginon the seventh setigerous segment; on the sev- enth, eighth,

and

ninth segments, asinglefilament; on thetenth, elev- enth,

and

twelfth,

two

fllaments; on the thirteenth, fourteenth,

and

fifteenth, three filaments; from the sixteenth to the thirty-seventh, fourfilaments (Fig. 36b); onthe posteriorfragment thebranchiiXi have but a single filament (Fig. 36c),

becoming

verydelicate

and

short

on

theposteriorsegments (Fig.36d).

The

dorsal cirri, largest on the first setigerous segment (Fig. _36), growing progressively smaller (Fig. 36&); at first finger-shaped, then conical.

On

the first segment of the posterior fragment this cirrus

shows

considerable increase inlength,but isshorter than the branchia (Fig.36c*); while on the lastsegments (Fig.36rZ), tliough the length of thecirrus is aboutthe same,itis

much

longer than the branchia.

The

ventral cirri are stout, conical, base swollen; outer third, on anterior segments, cut off by a shallow constriction; longest on first

segments.

Anal

segment cylindrical, small.

Anal

cirrishort.

The

ui^per (capillary) (Fig. 27) set* are very long

and

delicate; long- estontheposterior third.

The

comb-likesetae(Fig. 40)havetheirouter

316 ANNELIDA FROM BERMUDA.

teethprolonged.

The

setiE of thelower bundleare

compound,

longer on theposterior segments thanin front; apex (Fig. 38) bi-dentate.

In theanteriorrami thereis but oneacicula, simple,pointed,project- ing a^little

beyond

thefoot; afterwards a secondaciculais

added

(Fig.

39),curved within the ramus, ventral, apex bluntlybi-dentate, project- ing.

The body

is stronglyconvex above, flattenedbelow.

The

widthat thefifteenth segment, S*"""; taperingvery gradually in

"both directions,givingon theposterior segments a width of l.S""™.

The

color, in alcohol, is light reddish-brown, with indications of a white

band

on theposteriorhalf ofthe fourth setigerous segment.

On

theposteriorsegments thecoloris dark reddish-brown.

Thereare

numerous

gray siiecks on the entire surface.

Eunice dentioulata

n.sp,

(Plate X, Figs. 41,41 a,b-45.)

Head

distinctly bi-lobed; lobes flattened,broad; antennaeshort,deli- cate, aboutone-third longer thanthe head, smooth, conical, equal.

Buccal

segment

aboutthe length of thenext three. Second segment notplainly separatedfrom the buccal,

when

seenfrom above.

Tentacular cirri delicate, conical, about one-half the length of the buccal segment.

Dorsal cirrilong

and

stoutonthe non-branchiatedsegments(Figs.41, 41a), very delicate on the segments withbranchiae (Figs. 41&, 42),

and

arising from theside ofthe branchial stem.

The

ventral ^cirri are quite long on the anteriorsegments (Figs. 41, -41a) ; after the firstfew segments they have ^{a swollen} base (Fig. 416),

butthis islost furtherback (Fig. 42).

The

branchiae appearat about themiddlethird,

and

fora large

num-

ber of segmentsconsistofasingle filament(Fig. 416); ataboutthebe- ginningofthelastthird another filament is added, while on the pos- teriorsegments there arethree.

The

capillarysette(Fig. 43)

have

alongcylindricalinner part; ashort, wide, flattened, outerpart, taperingsuddenly to a sharj) point.

The compound

^settij(Fig. 44)haveasmall,outertooth; alarge, stout, innertooth.

When

highly magnified thestem shows a series ofminute denticulations alongone margin,nearthe appendix,and the

membrane

X)fthe appendix shows an incised margin.

ljull. ::o.23,U.S. :N'ationalMuseum.

'LATD

X.

ANiNELIDA

FROM

liERMUDA.

317

The

^loweracicula (Fij(. 45) iscurved externally,

and

has two sharp, triangular, teeth, ofwhich the loweris verj-large.

Body

slightly convex above, flattened below; segments numerous, short;on thelargest specimen, at the widest part of the body, there were foursegments, in a length of 1""'".

Anal

cirrilostonallour specimens. Colorinalcohol, uniformyellow- ish-white.

Length

of longestcomplete specimen, GO""".

Width, a™'".

Another

^specimen, posteriorpartlost,

had

awidth ofi™'".

The

specific

name

^is given in reference tothedenticlesonthestem of the

compound

setae.

Eunice longisetis

n.sp.

(PlateX,P^igs. 46,40a, b-i9.)

Head

four-lobed, upper lobes small; antennre smooth, median

and median

lateralreaching backto the fifth segment; lateral about one- half as long as the median.

The

dorsal cirri arelong

and

stout (Figs. 46,46fl, b,) onthe branchi- ated segments, arisingjust at thebase of the branchial stem.

Ventral cirri stout,reaching

beyond

thefoot. Branchia) beginonthe sixth setigeroussegment, at firstas a single filament, delicate, shorter thanthe dorsal cirrus; further back the

number

of filaments increases to eight, carried on the sideofa stoutstem, which is nearlydouble the length of the dorsal cirri; on the posterior segments they

become

re-

ducedto the

same

condition as on the anterior,but persist to the end.

The

capillary setae areverylong, reaching nearly to the end of the dorsal cirri (Fig. 47); the

compound

setaeare aboutone-half as long as thecapillary, terminal teeth sharp (Fig. 48), nearly at right angles to each other.

In the upperpart of thefoot.are

two

or three sharpaciculae, project- ingslightly; in the lower ])art,

and

extending into the ventral cirrus,

a

single,curved, bi-deutateacicula (Fig. 49).

Body

convex above; flattened below; anal

segment

short; analc*irri

two,in allrespects similar to the dorsalcirri.

Color (in alcohol), dark reddish-brown. Fourth setigerous

segment

white. Antenna?, tentacular cirri,

and

dorsal cirri evidently

banded

withwhite

and some

other colorinlife, but with onlyslight tracesoi

such

marking

remaining. Aciculae black.

318 ANNELIDA FROM BERMUDA.

Buccal segment as long as the four following segments together;

second

segment

short, not well defined above; tentacular cirri about onehalfthe length oftliebuccal segment.

Number

of segments, 107.

Length, 40"^'".

Greatest width, 4'"'".

Eunice longicirrata

w. sp.

(PlateXII, Figs. 75-SO.)

Head

distinctly four-lobed; upperlobes narrow,but

somewhat

elon- gated.

Median

antennaereachingbacktotheeleventhsegment;

median

lateral also long, reachingto about the eighth segment; lateral about one-half aslong as the last.

They

are allvery delicate, smooth.

The

buccal

segment

is as long as the next three segments.

The

second segment^{isnearly as} long as thethird, plainly set off from the

first both above

and

below; its tentacular cirri are very delicate, acutely conical,reaching forwardto themiddle ofthehead.

The

dorsal cirri on the anterior segments arelarge

and

long{Figs.

75-77), irregularlywrinkled; they^diminishin sizeverygraduallyback-

ward

to themiddleof the

body

; behind the middle the}-again gain in diameter

and

length,butareneverso large as on theanteriorsegments.

The

branchige begin as a single "filamenton the third setigerous seg-

ment

(Fig. 7G)^; on the next

segment

they have G subdivisions, onthe next from12 to 15. This

number

theyretain to aboutthethirty-third segment; thenforthenexttensegmentsthe filaments gradually

become

fewer; from about theforty-third tothefifty-third there is butone^fila- ment; after thisthey disappear.

The

branchiatedsegments form about one-third the length of the body.

The

analcirri are in

two

pairs; one quite short, blunt; theother as longas thelast twelve segments taken together, exevy

way

similar to theantenn.T?.

The

bidentateseta^.have the form

shown

in Fig. 79^; the outer tooth

isquite long, bluntly

rounded

atapex; the lower sharp, triangular.

Inthe anteriorsegmentsthere is onestout,projectingacicula, inthe upper partof thefoot_; presently another is

added

; stillfurther

back

a bidentate acicula (Fig. 80) appears, in the lower part of the foot, followed quickly

by

another ofthe

same

kind. Delicate setsepenetrate thebase ofthe dorsal cirri.

ANNELIDA FROM BERMUDA. 319

The

goiieral colorofthe

body

(in alcoliol) is yellowisli-whitc; beauti- fully irridesceut.

Body

strongly convex above; tlattened below.

Length

(about), 110"'"'.

Greatest width, ^4'"°'.

There is a gratlual diniiuutiun of diameter along the posteriorthird.

Eunice violacea

Gruhe.

Euniceviolacca,Gruhc. AuuulataOrstt'diaiiap. 57. 1856.

EuniceviolaceaQuatrefagcs. Hist.Nat. dcs Annel.,vol.i, p.320. 1805.

EunicelioufisoiEhlers. DieBorstenwiirnicr, p.309. 1868.

Ehlers' identihcation of E. violacea

Grube

with U. Eoussa^i Quatr.

seemsat best verydoubtful. In the former,the branchiae appearonthe sixth segment; in the latter, on the tenth,

and

both descriptions

seem

to have been

made

from adult forms.

Our

material^ishardly sufficient todecide the question positively.

MARPHYSA

QiMtrefages.

Maephysa aciculaeum

n. q).

(PlateX, Figs..50-53.)

Head

broad, distinctly bi-lobed;lobesvery broadlyrounded in front;

anteniia3smooth, tapering but little; median and median ])air about three times as long as thehead^; lateral pair a little shorterthan the last; eyes two, black, between the bases of the paired autenujie.

Buccalsegment double the length of the following segment; second segment atritie shorterthan the third.

Dorsalcirri(Figs.50-52)stout, conical,retainingaboutthe

same

length throughout; ventralcirri on the anterior half of the

body

borne on a stout cylindrical process, which becomes smaller onthe posterior j)art of the body.

The

branchiaebegin (onadultspecimens) on thetwentj'-fifthtotwenty- ninth setigeroussegment, atfirstas a single filament, shorter than the dorsal cirrus.

The

filaments soon increase in

number

to four (Fig. 51'),

but on the posteriorsegments

become

again reducedtoone very minute filament.

The

superior (capillary) set?e are about doublethe length of the in- ferior,

and

ofthe ordinary form.

The

form oftheinferiorsetteis

shown

in Fig. 53.

Therearefromthree tofive sharp,black aciculaeineachfoot,scarcely projecting.

320 ANNELIDA FROM BERMUDA.

The

first ten segiiicuts are rounded; tlicirlength a little more, their diameter alittle less, than that of the segment ibllowing. After the tenth segment the bodyis

much

depressed; very.sliglitlycouvexabove,

flatbelow; along the})osteriorthird thebody is

somewhat more

convex,

and

diminishes gradually in diameter.

Length, 120'"'".

Greatest width, 0'""'.

Color (in alcohol), dirty white,

somewhat

iridescent.

NICIDION

Kinberg.

NlCIDION KiNBERGI

n._SJ).

(Plato XII, Figs. 81-d8.)

Thisgenus ^isrepresentedin Mr. Goode'scollection

by

^asingle speci- men, ofwhich the posteriorsegments are lost.

What

remained is in

goodcondition,

and

itseems desirable todescribe it,as well a^s

maybe,

becauseso few species ofthegenus have been found.

The

head (Fig. 81) is bi-lobed, convex above and at the sides; the

median

antennareachingback tothethirdsegment; the])airedantennje alittle shorter than the

median

; eyes small, circular, black, situated back oftheorigin of thelateral antenna3.

The

buccalsegment isnearly aslongas the three followingsegments together; the second

segment

perfectly well marked, as long as the third^;thetentacularcirriwere lost,merelya short basal part remaining.

The

dorsalcirri on the anterior segments arestout, irregularly

and

bluntly conical (Figs. 82, 83); further back they

become somewhat

smaller (Fig. 84).

The

ventralcirri on a few of the anteriorsegments (Fig. 82) are as long as the dorsal, finger-sha])ed; soon they

become much

swollenat base (Fig. 83),

and

then fall oft" rapidly in size, being hardly perceptibleon the posteriorsegments of ourfragment (Fig. 84).

The

^capillary setfe are widened for a part of their length (Fig. _86),

and

then

drawn

out into a delicate capillary termination.

The

com-

pound

setaj have theform

shown

inFig.85. Thereare

many

comb-like setiB (Fig.87),withtheir teethcurved

and

prolonged,especially one of the outerteeth.

In the anterior feetthere is a single stout acicula, straight, pointed, slightly projecting; further back ai)pears a bi-dentate acicula, in the lower part of the

ramus

(Figs. 84, 85).

Body

strongly convex above,flator slightly concavebelow.

ANNELIDA FROM BERMUDA. 321

Color, in alcobol, white.

Length

ofseveut}- segments, ^14™'".

Diameter, l.'i'"*".

ARABELLA

(Griihe) Elders.

Arabella opalina

Yerrill.

Lumhricoiiereis sjylendidaLkidy. Mariueluvert. Faunaof R.I.andN._{J., p. 10.} 1855.

Lumbriconerds opalinaVkukill. Invert. Animals ofVineyard Sound, in Report of U.S.CommissionerofFishandFisheries,PartII,p.342,pi. xiii, figs. 67, 70. 1874.

Arabella opalinaVerrill. Proc.Acad. Nat.Sci. Phila. for 1878, p.299.

Arabella opalina VfvAiAtFM. Aunel.Chaj. oftheVirginian Coast, etc., p. 242. 1879^

Aunel.Chajt.ofN. J., p.110. 1880.

Thisspecies, on ourcoast, certainly ranges as farnorth as

Cape

Cod,

and

as farsouth as Beaufort, N.C.

CENONE

(Savigny)Elders.

CEnone diphyllidia

Schmarda.

Plate XII, Figs. 89-91.

(Enone diphi/llidia Schmarda. NeucWirbel. Thiere, vol.i, partii,p. 120,pi. xxxii, fig.256(alsofigures in text). 1861.

AndromachediphyllidiaKixberg. Annulata Nova,p. 571. 1865,

(EnonediphijUidiaQva.trv:fagbs. Hist. Nat.desAnn., vol i,p. 374. 1865.

CEnonediphyllidiaEhlers. DieBorstenwiirraer, p. 407. 1868.

In preservedspecimensthe "frontal tentacles" of

Schmarda

(Mund-

l^olster, Ehlers) are hardly ^isible.

The

anteriorfeetwith alltheirappendages are shorter

and

wider than those further

back

(Fig. 90). After thefirstfew segmentsthere

may

be from one tothree stout bi-dentate setaeinthelower part ofeachramus.

Ehlers' remarks

upon

this genus

and

species

seem

to beaccurate in every respect.

Fam. ARICIID^.

ANTHOSTOMA

Schmarda.

AnthostomaramommSchmarda. NeueWirbellose Thiere,vol.i,partii,p.62(figs,of feetandsetaeintext).

The

collection containedbut one specimen of this species,

and

that very badlyinjured, butsufldcientfor identification.

Bull. Nat.Mus. No. 25 21

322

^'

ANNELIDA FROM BERMUDA.

Fam. OPHELIID^.

OPHELINA

Orsted.

Grube, in his

Annulata

Semperiana_(p. 193), arranges the genera of thisfamilyin the following

manner

:

0/)/fe7i?iaOrsted; type, Ammotrypanneaidogaster'R&.tiiKv:.

AmmotrypaneRathke; type, Ammotrypane^limacinaRathke.

OpheliaSavignt; type, Ophelia McornisSavigny.

This arrangement seemstobe correct,

and

accordingly the following specieshas beenreferred to Ophelina.

Ophelina maculata

n. sp.

(PlateXI, Figs.54,55.)

Head

as long as the firstthree segments taken together, terminating inadelicate,elongated,conical process,whichissetoff

by

a shallowcon- striction.

There arethree eyes,forminga transverse series, near the posterior margin of the head, very^small, themiddleone largest.

The

^firstseg-

ment

isquite short; fromthefirst tothesevenththesegments increase gradually inlength; after thesevenththey are of uniform length, ex- cept thelastfour, which are shorter.

The

^outlineofthefeet

and

relativelength of the setse are

shown

in Figs. 54, 55.

The

branchiae begin on the second segment; on all our specimens there are 24pairsofbranchiae,withoneexception,

where

there are24on oneside, 25

on

theother, leaving three non-branchiated setigerousseg- ments. It is possible that the branchiae

have

been lost from

some

or

allofthese segments, as

we have

butfewspecimens,

and

in allthepos- teriorsegmentsare

somewhat

injured.

The

branchiae are densely ciliated.

On

the seventh segment a circularblack spot appearson the sideof the segments, close to the origin of the branchiae. These spots are fouud on ek ven segments; they then

become

elongated, narrow,

and

presently disappear.

The

general color{inalcohol) is pearl-gray. In every case the anal

segment

is too

much

injuredto admit ofdeterminingthe

number

ofthe papillae.

A

few of

them

are bifurcateat extremity.

Length, lO"""^.

Width,

^2™".

iiuU.^.\25, TT.S.National Mnsenm.

PLATE

XI.

ANNELIDA FROM BERMUDA.

32Sf

Fam. THELETHUSID.E.

AEENICOLA

Lamarck.

Arenicola cristata

Stimpson.

Stimi'SOX. Proc. BostonSoc.Nat.His., vol. v,p. 114.

QUATKEFAGES. Hist.Nat.(les^Aiiii., vol.ii,p.G73. 1865.

The

posterior(non-branchiated) segmentsof this species areset off from eachotherby deep constrictions.

On

thefirstsegment,

back

of thebranchiae, the feetare represented

by two

stoutconical cirri on either side, distant from each other

by

aboutthe diameterofthe base ofeach.

On

the remaining nine segments there isbut a single cirruson eacfi»

side,

and

these passto theventral surface,

and

stand close together.

Fam. CIRRATULIDiE.

CIERATULUS

Lamarck.

CiRRATULUS TENUIS

n. sp.

(Plate XI,Figs. 56, 57.)

Head

short, bluntlyroundedinfront; noeyes. Firstthree

segments

withoutsetoe orcirri. Third segment alittle longer than the fourth r,

as long as thefirst

two

together.

Lateral branchiae begin on the fourth segment,

and

exist, on thean- terior thirdofthebody,on allsegments; notso

numerous

furtherback.

Dorsal branchiae on the fifth, sixth,

and

seventhsetigerous segments..

twoor three on each sideof each segment; not forming a complete transverseseries, but leaving a

naked median

^space. Branchialcirri alllong, notdiiferingfrom each other.

The

seticof theanterior segments are capillary in both rami, long, delicate, 7-10ineachfascicle.

At

aboutthe fifteenth setigerous segment the ventral setae begin to bereplaced

by

uncini,

and

after afewsegments thecapillarysetae dis- appear. Thereareat firstthree of the ventraluncini; then two;while on theposteriorsegments thereis but onetoeach ramus.

At

aboutthe twentieth setigerous

segment

uncini appear in the dorsal rami^; both kinds of setaeremain to the end.

The body

is convex above, compressed, flattened below; segments' veryshortbutdistinctlydefined; fromthemiddlethediameter doorcases slightly,backward.

^STuraberof segments, 110.

Length, aO'"'".

Diameter,^2™°>.

324 ANNELIDA FROM BERMUDA.

Fam. TEREBELLID^.

TEREBELLA

(X.) Malmgren.

TeKEBELLA MAGNIFICA 11, Sp.

(PlateXI, Figs, 58-60.)

The

tentacles are very numerous, stout, three-fourths as long as the body, even in alcoholicspecimens.

The

branchiae of the first pair are large

and

long (12'"™); of the second, one-half the^first; of the third, one-half the second: the stem, before giving oti" branches, forms one-half thelength.

The

branchiai

have numerous brown

specks on theirstems

and

branches.

Seven segments, beginning with the second branchiated, have a small, conical papilla or cirrus,placed betweenthe

two

rami; thereis a similar cirrus ata correspondingplaceonthefirstbranchiated segment.

The

ventral surface of the second segmentis raisedinto athin plate, on either side of themiddleline,wideningexternally; a

somewhat

sim- ilar structure, but notso wellmarked, occurs on the third

and

fourth segments.

Back

of the fourth segmentare the ventrali)lates, sixteen in number, of uniform width,theiranterior

and

lateral marginsthick- ened

and

separated

by

an impressed line from the

body

of the plate.

The

widthof thefirstplate isfive to sixtimesits length; they

become

]>rogressivelynarrower,until on thelastplatethewidth

and

length are aboutequal.

As

the ventralplate

becomes narrow

theuncigeroustori widen. .

An

impressed linerunning just in frontof the pedal rami divides each

segment

into

two

parts; very distinctlyabove, lessso below.

The body

^retains a uniform diameter ^to the posterior sixth; after which it tapers

somewhat

^rapidly, the diameterof the anal

segment

being aboutone-halfthat of themiddle segments.

Length, IGO"""'.

Diameter, ^8™™.

Number

of segments on specimen measured, 135.

Color in alcohol, yellowish-white.

ENOPLOBEANOHUS

^Verrill.

Enoplobkanchus sanguineus

Verrill.

ChcetohranchnssangitineusVerrill. Invert.AnimalsofVineyard Sound,p.616. 1874.

EnoplohranchiissanguineusVerrill. Check-List.

Enoplohranchus sanguineus Webster. Annel.Chast. of the Virginian Coast,p. 263.

1879.

Tlie collection contains a few specimens, all

much

injured, certainly belonging to this peculiar genus,

and

probably also to Yerrill's siiecies.

ANNELIDA FROM BERMUDA. 325

Fam. SABELLID^.

PEOTULIDES

^n. g.

Branchiae united alongtheir inner i)art

by membrane.

Setfe of first segment in an oblique doubleseries. Uncini in

two

series

and

of

two

kinds on all segments. Anterior dorsal setaeof

two

kinds. Collarcomplete, saveforanarrowdorsal incision; notreflexed.

Ventral sulcus continued on thedorsum.

Thisgenusisclosely related toFotamilla

Malmgren,

butdiliersfrom

itin the character

and

arrangement of the setajof thefirstsegment, in the continuation of the ventral sulcus on the dorsum,

and

in having

two

rows of unciniontheabdominal segments.

Protulides elegans

n.g., n. sp.

(PlateXI, Figs. 63-74.)

The

branchial cirriarefromninetofourteenon each si^e,baseform- ing a semicircle; theyarisefrom a long undividedbasal part, one-half aslongasthecirrithemselves

;

pinme

elongate, delicate; shortterminal part of thecirrus withoutpinnae.

There are

two

seriesofminuteeye-specks,one abouttwo-thirds of the

way

out on the cirri, corresponding to the space occupiied

by

six or seven innnaj; another, still furtherout. These eyes cannot be seenin alcoholicspecimens.

Tentacles flattened, triangular, length about one-fourth that of tlio branchiae.

The

first segment is doublethe length of the second,comi)lete save foranarrow dorsalincision (Fig. G3).

There arefrom six toeight thoracic segments, the variation in

num-

ber not depending on size, as

some

of the largest specimens have but six segments. Posteriorsegments short; numerous.

The

setieof the first

segment

are in

two

series, which runobliquely from before backward, along the entire length of the segment. All these setae are dilated atthe end,

and

have a capillary apex; they

do

not diflerfrom each other

much

in form (Figs. G4-66); there are about forty setae in each row; they barely projectfrom thesurface.

Seta3 of remaining thoracic segments of four kinds^: In the dorsal ramus, from 4 to 5 long bi-limbate setae(Figs. 67, 68); below these a double series of shortsetae, with dilated globular extremities (Figs. 09, 70) withoutcapillary terminations. In the ventral ranuis are the

two

S26 ANNELIDA FROM BERMUDA.

forms

shown

in Figs. 73

and

74^; thesearearranged intwo long series,

^fterthechange ofseta? (i. e., on the abdominal segments) the uncin:"'

xemain

without modification (Figs. 73, 74); the ventral rami carry a

few

very long capillary setae (Fig. 71),

and

others with dilated end,

from

thedei^ressed

summit

of which ^arises a very delicate capillary :iippendix or apex (Fig. 72); further back both kinds of ventral sette ibecome

somewhat

elongated, and, in i)articular, the capillarytermina- tion of the setfewith

expanded

endsdoublesin length.

The body

is convexabove,flattenedbelow; ofuniform widthforthe :anteriorfour-fifths,falling offgraduallyalong theposterior fifthtoone- lialfthe anteriorwidth.

The

base

and

cirri ofthe branchiae are purple, except thebase ofthe .superior cirruson eachside, whichiswhite; i^innre, to the outermargin

'Oftheconnecting

membrane,

purple; then, fora shortdistance, white;

next, for a longer distance, purple; followed

by

another short white series. Terminal pinnae, purple;

naked

terminalpart ofcirri, colorless.

Where

theijifinteare white the sidesofthecirri arealso white,butthe

dorsum

of the cirri is alwayspurple.

Young

specimenshavethe cirri

mmber-brown

or brown, with a tinge of purple; innnsB colorless, white

«or greenish-white.

The

first

segment

has its anterior marginwhite

;

•dorsum

and

sides dark

umber-brown

; ventral surface, for anteriortwo- rthirds

same

^as thedorsum, thenanaiTow whiteline,while the])osterior

partof this surface is dark flesh-color.

Eemaining

thoracic segments, umber-brown; dorsal-rami of this part of the body, dark flesh-color.

Abdominal

segmentslightflesh-color.

On

the analsegment

two

umber-

^rown

spots(Ieyes)

which

cannot be

made

outin preservedspecimens.

This species forms a very tough

membranous

tube.

The

description givenaboveis largely

drawn

from notes on specimens found at Beau-

fort,N.

C,

in 1876,

by

the

Union

College zoologicalexpeditionof that year.

Most

of the specimens found at Beaufort

had

their tubes im- 33edded in fragmentsof a soft oolitejustbelow low-water mark.

Two

specimens were found with thesetubes attachedto shells.

A

specimen with something over a

hundred

segments,

measured

u\'hile living,gave

—

Length, 26'""\

Ureadth, 2""".

^rom

frontmarginofcollar to tipofbranchiae, ^{5™°^.}

Another

specimen:

Xength, SO-"™.

Breadth, SS-""".

Cull.Xo.25,U.S.NalioualMuseum.

PLATE

XII.

ANNELIDA FEOM BERMUDA. 327

SABELLA

(i.) Malmgren.

Sabella melanostigma

Schmarda.

The

collection contains a single specimen, without branchiae,

and

otherwiseinjured, which probablybelongs toSchmarda's species.

Fam. SERPULID^.

HYDROIDES

Ounnerus.

Hydroedes dianthus

^Verrill.

Serpula dianihuaVerrill. Invert.AnimalsofVineyard Sound,p.620. 1874.

Eydroides dianthusVerrill. Proc.Acad. Nat.Sci.,Phila.,for 1878, p.300.

Hydroides dianthusWebster. Annel. Cliaet.oftheVirginian Coast, p. 266. 1879; of

New

Jersey,p.128. 1880.