102 DE. G. S. BIJADY ON NEW OE 



male (fig. 4) having four sensory setae and a strongly falcate claw. Postabdominal 

 lamina; armed with eight slender, curved, slightly pectinate claws, which increase 

 progressively in length from before backward. The crop is excessively stout and 

 muscular (fig. 8). Length 2-G mm. 



Ilah. This appears to be a rather scarce species: the few specimens which were 

 noticed occurred in plankton gatherings from the North Alantic, for the opportunity 

 of examining which I am indebted to Dr. George Murray, F.R.S., of the Natural 

 liistory Museum, South Kensington. The following are tiie localities : — Lat. oT 27''6 

 N., long. i5" 40' W., 1570 fathoms (1 specimen) ; lat. 52° 18'-1 N., long. 15= 5.3'-9 W., 

 950 fethoms (1 specimen), 500 faihoms (1 specimen) ; lat. 52° 27'-6 N., long. 15°40'W., 

 1170 fathoms (1 specimen): lat. 52° IS'T N., long. 15° 53'9 W., 1070 fathoms 

 (3 specimens). 



Only one male specimen was seen, and I failed to find the antennule, which had 

 probably been detached in the process of capture. 



The reference to the genus Conchoecissa must be taken as provisional only, as some 

 important characters could not be clearly made out from the material at my command. 



Family CYPRIDID^E. 



Genus Cypris Miiller. 



Ctpris virens (Jurine). (Plate XXIll. fig. 8.) 



Several specimens collected by Dr. Meinert at Bona, Algiers, one of which is here 

 figured, appear to be referable to C. virens, although differing somewhat from typical 

 examples in the shorter and more tumid form of the shell. The soft parts conform 

 accurately to the type. 



Ctpris flexilis, sp. nov. (Plate XXIII. figs. 11-15.) . 



Shell, seen from the side, oblong, subreniform, about twice as long as broad (fig. 11) ; 

 anterior extremity moderately rounded, posterior rounded off above, obscurely angular 

 below owing to a production of the left valve ; dorsal margin forming a flattened arch, 

 ventral very slightly sinuated in the middle. Shell extremely thin, flexible, and almost 

 transparent. Length 4 mm. The swimming-setse of the antennae (fig. 12) reach 

 scarcely to the apices of the terminal claws ; principal ungues of the first pair of 

 maxillae finely ciliated, but without marginal spines ; terminal claw of the first pair of 

 feet (fig. 14) extremely long and slender, equal in length to the four preceding joints ; 

 caudal laminae very long and slender, their posterior margins very finely (almost 

 imperceptibly) ciliated ; the terminal setae, two apical and two marginal, crowded 

 together at the distal extremity. 



Bah. A few specimens taken at St. Croix, West Indies. 



