1855.] 383 



with two or three short setae on the back ; superior antennae as long as the body, 

 with 22-articulate flagella, appendicula triarticulate ; eyes small, circular ; hands 

 hairy, second pair largest ; caudal stylets of the first and second pairs with very 

 slender, smooth rami ; posterior pair with the external ramus long, thick, styli- 

 form, setose, the internal one extremely minute ; terminal processes of consider- 

 able length, curved, each surmounted by a long spinule. Color blackish-olive. 

 LeDgth J inch. 

 Ilab. Loo Choo. 



69. Leucothoe styltfera. Antennae of equal length, one fifth that of the 

 body ; flagella of the very slender inferior ones triarticulate ; eyes small, subre- 

 niform, broadest above, dark-red ; epimerals rather large; especially the fourth 

 pair ; bands as in L. furina, granchmanus, etc . ; coxae with wide expansions, some- 

 what produced interiorly ; caudal stylets nearly smooth, sharp, much elongated, 

 last pair much exceeding the first, and with large peduncles. Color pale orange. 

 Length ^ inch. 



Bab. Japan. 



70. Allorchestes rubricornis. Smooth, compressed ; eyes suboval, black, 

 widening below; inferior antennae two-thirds the length of the body, with 25- 

 articulate flagella, articulations nearly as broad as long, with few short hairs ; 

 superior antenLae two thirds as long as the inferior ones, flagella 13-articulate ; 

 large hands of male nearly smooth below; hands of female slender, with fingers 

 of one-fourth their length ; posterior pair of caudal stylets conical. Color pale 

 olive ; antennae always red. Length inch. 



Ilab. Uusima, Boninsima. 



71. Allorchestes penicillata. Penultimate article and first four segments 

 of the inferior antennae furnished with spreading pencils or plume3 of long setae ; 

 first pair of caudal stylets with a long curved spine, arising near the bases of 

 the rami and nearly equalling them in length ; epimerals, legs, etc., of medium 

 size, as in the preceding species. Color greenish. Length ^ inch. 



Ilab. Otisima. 



72. Allorchestes japonica. Smooth posteriorly ; inferior antennae stout, 

 one-fourth as long as the body, and twice as long as the superior ones ; flagella 

 of both with twelve oblong articulations, with extremely short, numerous setae. 

 Head rather small ; eyes large, black, very broad oval, closely approaching each 

 other above; large hands of male notched below ; posterior pair of caudal sty- 

 lets very minute; a prominent contraction at the fourth abdominal segment 

 above. Color olive ; epimerals and legs shaded with red. Length \ inch. 



Ilab. Japan. 



73. Orchestia pollicifera. Male with stout inferior antennae, the flagella of 

 which form one third their length ; first pair of legs small, chelate, with the 

 penult and antepenult articles produced below into thumb-like processes; 2nd 

 pair with ovate hands of moderate size. Female with slender inferior antennae, 

 flagella 12-articulate ; superior ones as long as the first two joints of the others ; 

 legs of the first pair simple ; second pair with small hands, having a minute la- 

 teral finger. Color pale brownish ; eyes rather small, round, black. Caudal 

 stylets short, rami sub-conical. Length three-fifths of an inch. 



Hob. Loo Choo. 



74. Coropiiium contractum. Antennae equal in length, which is one-fourth 

 that of the body ; superior ones with 4-articulate flagella ; inferior ones very 

 thick, with minute terminal articles; posterior pair of legs rather long, with long 

 plumose seta3 along the edges of the coxae. Color yellowish, eyes black. Length 

 \ inch. 



Ilab. Japan. 



75. Caprella luctator. Smooth, rather slender; first article of superior an- 

 tennae thickened, one-third as long as the second, which equals the third ; fla- 



