66. Meckelia rubella. Short, broad posteriorly, of a pale salmon color ; 

 head very small, pointed ; neck slightly contracted ; lateral slits of great length, 

 extending far behind the neck. Length 2 inches. 



Hab. China. 



67. Meckelia nigra. Thick, narrowed and truncate anteriorly, flattened be- 

 hind ; color black ; head comparatively large, elongated, with the lateral slits 

 extending as far as the slightly contracted neck ; mouth white. Length 3 inches. 



Hab. Chiaa. 



AMPHIPODA. 



G8. Phoxus qeniculatus. Rostrum very long, pointed ; eyes white ; superior 

 antenna; biflagellate, flagellce equal, lO-articulate ; members with simple hairs ; 

 third and fourth articles of the third and fourth pairs of legs dilated ; rami of 

 the posterior caudal styles unequal, the outer ones long, three-jointed ; color 

 white. Length \ inch. 



Hab. Japan. 



69. Phoxus obtusus. Rostrum short concave, its extremity rounded ; appen- 

 dicula of the superior antennae very short ; legs of the first four pairs slender ; 

 third and fourth pairs with unexpanded joints, and spinose extremities ; hairs 

 simple, except on the fifth pair of legs, where they are long and plumose ; last 

 pair of caudal styles with flattened, lanceolate rami, the external ones longest ; 

 caudal extremity with two lamelliform processes, emarginate at the extremities. 

 Length -} inch. 



Hab. Japan. 



70. Dercothoe? productus. Ophthalamic lobes of head much produced, 

 bearing the eyes at their rounded extremities ; antennse of equal length, one- 

 half that of the body, with few long hairs: flagella with ten much elongated 

 articulations ; hands four, subequal, oblong ; posterior caudal stylets with short 

 rami, the outer ones uniform, the inner minute, spine-like ; caudal scale sub- 

 cordiform, pointed behind. Length |- inch. 



Hab. Tanegasima. 



71. Amphithoe filigera. Body thick about the middle, compressed towards 

 the extremities ; a few setiferous points on the posterior abdominal segmepts ; 

 epimerals large ; eyes rounded, bright vermilion ; antennse very slender, the su- 

 perior ones nearly as long as the body, their hair-like, 40-articulate flagella con- 

 stituting four-fifths of their length ; hands in the male subequal, of moderate 

 size, very hairy, deeply notched below for the reception of the closed finger; cau- 

 dal stylets of the last pair short, ovate or heart-shaped, with small papilliform 

 rami. Color, olive punctate ; epimerals greenish. Length h inch. 



Hab. Loo Choo. 



72. Gammarus flabellifek. Slender, smooth posteriorly ; superior antenn® 

 half as long as the body, flagella 20-articulate, appendicula 5-aruculate ; hands 

 oblong-elliptic ; with a fusiform area below surrounded by short setee ; eyes 

 small, round, black ; rami of posterior pair of caudal stylets long, lamelliform, 

 elliptical, equal spreading like a fan. Length h inch. 



Hab. Loo Choo. 



73. Gammards tesuicornis. Compressed, posterior segments of the abdomen 

 v.'ith two or three short setae on the back ; superior antennas 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 ihe external ramus long, thick, styli- 

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

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

 Leng-h A inch. 



Hab. Loo Choo. 



74. Leucothoe sttlifera. Antennae of equal length, one fifth that of the 

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



