THE OSTRACODA 



41 (40) Dorsal edge of furca plain (Fig. 1267 b}. 



Herpetocypris testudinaria Cushman 1908. 



Length 2.10 mm., height i.oo 

 mm., width 0.80 mm. A small 

 extra spine by subterminal claw. 

 Furca about fourteen times as long 

 as wide, its claws plain. Ponds. 

 Newfoundland. May. 



FIG. 1265. 



Herpetocypris testudinaria. (a) Side 

 view; (b) Furca; (c) End of furca. 

 showing small spine by claw. 



42 (43) Natatory setae of second antenna reach to tips of terminal claws, or 



slightly beyond. Second leg with a beak-like end segment 

 and a claw (Fig. 1268 b, e). . Subfamily CYPKTDINAE . . 44 



43 (42) Natatory setae of the second antenna reach beyond tips of terminal 



claws by about one-half their length. Second leg with 

 three terminal setae of different lengths, two of them re- 

 flexed, the other short and claw-like (Fig. 1290 c, /). 



Subfamily CYCLOCYPRIDINAE . . 75 



44 (45) Testes, if present, originating in anterior part of shell in form of 



concentric circles or half circles (Fig. 1266). 



Spirocypris Sharpe 1903 . . 46 



45 (44) Testes, if present, not originating in anterior part of shell in form of 



concentric circles or half circles (Fig. 1271 b). 



Cypris O. F. Muller 1785 . . 48 



46 (47) Shell not tuberculate, excessively hairy (Fig. 1266 a). 



Spirocypris passaica Sharpe 1903. 



Length 1.60 mm., 

 height 0.80 mm., breadth 

 0.82 mm. Brownish with 

 dark-blue patches later- 

 ally an d dorsally . Nata- 

 tory setae reach slightly 

 beyond tips of terminal 

 claws. Terminal claw of 

 second leg one and one- 

 half times length of ter- 

 minal segment. Furca 

 about one-half length of 

 shell, about twenty-three 

 times as long as wide, and 

 its dorsal margin weakly 

 pectinate. Weedy ponds; 

 spring months. Massa- 

 chusetts, New Jersey. 



FIG. 1266. 

 Spirocypris passaica. (a) Side view, X 30; (b) Dorsal view; (c) Furca. 



