TWO NEW CYMOTHOIDS FROM THE WEST COAST OF CENTRAL AMERICA

The two

species

new

to science, herein described, were collected

by

Dr.C. H. (xilliert on the west coast of Central

America from Panama

and Mazatlan.

Both

were found in the

mouth

of J/ii<j!l ho.spes.

LIST

OF REFERENCES.

Ed\v.\rds, Milne. Hist. Nat. Crnst., Ill, p. 271.

ScHicEDTE, J. C, and Meinert, F. SyniI)ola' ad indnoLrraiihiam Cymothoanim, CrustaceorumIsopodum Fainilia'.

—

IV. Cyniothoida', Trib. II. Cymothoina\

Trib. III. Livonecinw. Naturliistoriyk Tidsskrift (:!), XIV. 18S.S-S4, pp. 884- 336, pi. xiii, figs. 7-8.

. 8ymbola' ad MonographiaiuC^vmothoarnin, CrustaccornmIsopodum

FamiliiK.

—

III. Saophrida'. IV. Cyinotlmida',Trib.I. C'cratothoina'. Natur- historisk Tidsskrift(3), XIII, ISSl-s:;. pp. 33r)-340, pi. xui, (i<rs. 11-15; pi. xiv, figs. 1-4,5.

52 PROCEEDINGS OF THE NATIONAL MUSEUM.

^VOL.XXVII.

Fig. 29.—Head and first thoracic segment of indusacarinata. \5.

FLABELLIFERA, or CYMOTHOIDEA.

Family CYMOTHOID^E.

INDUSA" CARINATA,

new species.

Body

very^convex, havinga decidedly

hunched

appearance.

Thorax

large, rounded, almost as wide as long, thelast

two

segments rapidly converging to the

narrow abdomen. Abdomen

nearly three times narrower than greatest width of thorax, with all thesegments of equal width.

Head

about

two

and a half times narrower than tirst thoi'acic

segment

and four times nar- rower than fourth segment; front triangular in shape and produced into an acute point pro- jectingbetween the basal joints of theantenna?.

Eyes

distinct and situated at the sides and aboutthe middle of the head. First pair of antennje, which are almost contiguous being separated only by the very acute

median

point,

reachto the eyes; flagellum sevenjointed. Second pair of antenna extend tothe posterior

margin

of thehead; flagellum nine jointed.

First thoracic

segment

rounded anteriorly and posteriorly, the sides of the

segment

surrounding the head, the lateral angles extendingto the eyes.

The

firstfoursegments gradually increaseinwidth.

The

fourth and fifth are about equally wide.

The

sixth and seventh rapidly decrease in width, con- verging to the narrow

abdomen. The

epimera are ^{^•«-} welldeveloped on all the segments with theexcep

tion of the first; they are

narrow

and elongate, rounded posteriorly andnot reaching the posterior

margin

of their respective segments.

The abdomen

is likewise very convex and is nearly three times narrower than the thorax at its greatest width.

The

segments are of equal width.

The

termi- nal

segment

isrounded posteriorly or slightlytriangu-

lar.

The

uropoda are veryshort, less than half the lengthof theterminalsegment; thebranchesareequal in length.

There isa high carina on the four posterior ^pairs of legs,andasmalloneonthe three anteriorpairs. Color reddish brown.

Two

specimens, a male and a female, were collected

by Mr.

C. H. Gilbert

from

the west coast of

Panama. They were

found inthe

mouth

of Miigil hospes.

Type.—C2^i. No. 28961,

U.S.N.M.

30.

—

INDUSACARINA- TA,NEWSPECIES. X2|.

Fig. 31.—Leg of seventh pair of iNDUSA CARINATA.

X7.

«Schioedteand Meinert.—NaturhistoriskTidsskrift(3), XIV,pp. 334-335.

NO.1350.

NATUBAL

UlSTOllY

OF THE

IsryPODA—TirCirARDSON.

53 MEINERTIA GILBERTI,

newspecies.

Head

set in tirst sooinentof thorax,

whose

antero-lateral prolonga- tions extend forward to about the middle of the eya. Shape of the head

somewhat

triangular; posterior margin straight; anteriormargin produced

somewhat

at the middle, but quite rounded.

Eyes

very large, far apart, and situated at the sides of the head. First pair of antennaeconsist ofsevenjointsand extendto themid-

dle of the eye; second pair contain eight ^jointsand reach the posterior margin of the head.

The

first four segments of the thorax are al)out equal in length, thesecond being

somewhat

^shorter.

The

^lastthree segmentsdecrease graduallyinlength.

The

epimeraarenarrowpiecesatthesides of theseg- ments; in thefirstfivesegmentstheydonot reach the posterior margin of the segments, although the fifth pair

more

nearly reachthe posteriormargin than the others; the epimera of the last

two

segments reach

(piite to the posterior margin.

The

first

segment

of the

abdomen

^is as wideas the

last thoracic.

The

others are wider, increasing in width gradually tothe terminal segment.

The

last

segmentis about three times as broadas long, and quadrangular in shape.

The

uropoda are short,

reaching only a little

beyond

half the length of the

abdomen:

both ])ranches are alike and of ecpial length.

The

legs all terminate in long recurved unguli. There is no high carina developed on the basis of any of the legs.

Color reddish l)rown.

Three specimens,

two

males and one female, werecol- lected

by

C. H, Gilbert at Mazatlan.

They were

found

in the

mouth

of J/ugil /wspes.

7}//>..—Cat. No. 29080,

U.S.N.M.

This species differs chiefly

from

Jf. </ai(d/ch(iud(l (Milne Edwards)"

from

near locality, in the absence of

,. „ , high carina', whichin

2L

qauchchaudil are stronglv de-

tiG.33.—Leg of ^{'^ '} _«

i •

i i v i.

SEVENTH PAIR vclopcdonthclastfourpairsoflegs;

m

the

much

^shorter

OF MEINERTIA

^^j-op^^^jji ^vhlcli ill ,V. </<!X

d

Ich(I>i(l I! cxtcud lievond the

GILBERTI. X7. ^{I •'}

I • 1

'

terminal segment, ^both branches of which are narrowiv pointedattheir extremities; inthe

much

largereyes,andin the smaller sizeof the species,the adult femalebeingonlyhalfthesizeof theadult female of

M.

gaudlcliaad'i'i.

Fig.32.—Meinertia gilberti, newspe- CIES. X2|.

«NaturhistoriskTidsskrift, XTV,pp. 8:iV840, pi. xnr, fifis. 11-15.

54 PROCEEDINGS OF THE NATIONAL MUSEUM.

^vol.xxvn.

IV.