382 [June, 



59. Meckelia albo-vittata. Slender, gra3S-green ; head truncated, a little 

 narrower than the body, margined with white and crossed by a white band at a 

 point about the middle of the lateral fissures. Length 3 inches. 



Hab. Loo Choo. 



60. Meckelia sinensis. Subcjlindrical, head elongated, narrowiDg to a small 

 truncate extremity ; neck well defined ; color of body dark reddish-brown, head 

 sprinkled with minute patches of the same. Length \\ inches. 



Hab. China. 



61. 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. 



62. 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. China. 



AMPHIPODA. 



63. Phoxus geniculatus. Rostrum very long, pointed ; eyes white ; superior 

 antennas biflagellate, flagellae equal, 10-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. 



64. Phoxds 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 ; hair3 

 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. 



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

 bearing the eyes at their rounded extremities ; antennae 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 f inch. 



Hab. Tanegasima. 



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

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

 epimerals large ; eyes rounded, bright vermillion ; antennas 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 } inch. 



Hab. Loo Choo. 



67. Gammarus flabellifer. Slender, smooth posteriorly ; superior antennae 

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

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

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

 elliptical, equal spreading like a fan. Length inch. 



Hab. Loo Choo. 



68. Gammarus tenuicornis. Compressed, posterior segments of the abdomen 



