THE CRUSTACEA OF NEW JERSEY. 71 



two strong- toothed claws, one of which fused to segment. Ter- 

 minal claw of first foot long as rest of foot. Second foot 

 five-segmented, and terminal segment being but slightly longer 

 than broad, or one-half length of preceding segment, which 

 slightly longer than antepenultimate segment. Shorter terminal 

 claw about length of terminal segment, or about one-fifth length 

 of other similarly directed claw. Third and fourth segments 

 each armed with unusually long setae. Furca thick and stout, 

 nearly straight, average width one-sixth length as measured 

 along dorsal edge. Terminal set?e weak, scarcely evident, with 

 stout, slightly curved, plain terminal claw one-half length of 

 furca, and subterminal claw but slightly shorter, though both 

 faintly toothed near tip. Dorsal seta less than width of ramus 

 from subterminal claw and about same length as subterminal 

 claw. Second maxillary palp of male unusually long and slender. 

 Length of female, 0.56 to 0.65 mm. ; breadth, 0.32 to 0.34 mm. ; 

 heighth, 0.32 to 0.36 mm. Male somewhat larger. Found rather 

 sparsely in the shallower parts of a swamp near a small branch of 

 the Elizabeth River, northwest of Roselle Park, New Jersey. 



(Sharpe.) 

 Remarks. — The above account, the first American record, 

 shows the species to be widely distributed, having been known 

 previously only from Europe. 



Sub-Family Cypridin^. 



Natatory setae reaching beyond end claws, or approximately 

 to tips of end claws. Second foot with a beak-like end segment 

 and a claw. 



Key to the genera. 



a. Caudal rami rudimentary. cypridofsis 



ao: Caudal rami cylindrical, with two terminal claws. 



b. Testes, if present, originating in anterior part of shell, and anteriorly 

 in form of concentric circles ; shell tumid, excessively hairy. 



SPIROCY.PRIS 



bh. Testes, if present, not originating in anterior part of shell, and 

 usually not in form of circles or half-circles ; shell comparatively 

 smooth. CYPRis 



