GAMMARIDEA. ggQ, 



villose, joints not oblong. Hand of first pair of feet oblong, smaller 

 at base, finely ciliate below, obliquely truncate at apex. Hand of 

 second pair large subovate, flattened below and villous, palm a little 

 depressed, nearly straight, finger rather long. Last four feet sub- 

 equal, setae few and very minute, not as long as half the diameter 

 of the fifth joint, posterior apices of third and fourth joints pro- 

 longed and setulose. 



Plate 60, fig. 4 a, animal, enlarged ; b, part of flagellum of inferior 

 antennae ; c, inner maxillae, in different positions ; d, maxilla of second 

 pair ; e, maxillipeds ; /, hand of second pair of legs ; g, hand of first 

 pair ; h, part of sixth pair of legs ; i, posterior stylets. 



Sea-shores near Yalparaiso; and also, those of the island of San 

 Lorenzo, Peru. 



Body smooth, glabrous. Eye nearly round. Front margin of head 

 in lateral view sinuous, and the superior antennae appearing to arise 

 from a small concavity in the outline. Both pairs of antennae very 

 slender. Superior antennae about three-fourths the inferior in length ; 

 flagellum terete; three basal joints subequal. Inferior antennae thickly, 

 but short hairy on under side ; last basal joint much longer than pre- 

 ceding ; first two quite short ; whole base rather short. Maxillipeds 

 with joints somewhat short hairy, penult joint narrow cylindrical; 

 terminal claw or spine moderately long. 



A. hirtipalma, Dana, Proc. Amer. Acad. Sci., Boston, ii. 205. 



Allorchestes gracilis. 



Antennae tenuissimce ; lmce 2dis dimidio breviores et basi inferiorum 

 jpaulo longiores ; 2dce vix dimidii corporis longitudine, flagello rnulto 

 longiore quam basis, articulis oblongis, setis perbrevibus (diametro arti- 

 culorum non longioribus) , paucis. Pedes lmi parvidi, rnanu parce 

 oblongd, basi angustiore, apice paulo oblique truncatd, palnid recta, 

 breviter hirsutd, carpo triangulato, infra producto et acuminato. Pedes 

 2di validi, manu magna subellipticd, palmd rectiusculd, sparsim brevis- 

 sim£ Mrsutiuscidd, carpo inter rnanum articulumque Ztiv/m infra non 



223 



