74 REPORT OF NEW JERSEY STATE MUSEUM. 



Genus SPIROCYPRIS Sharpe. 



S piracy pris Sharpe, Proc. U. S. Nat. Mus., XXVI, 1903, p. 981. Type Spiro-' 

 cypris passaica Sharpe, monotypic. 



Shell excessively hairy, plump. Natatory setae simple, reach- 

 ing barely beyond terminal claws. Feet as in Cypris. Caudal 

 ramli nomial, slender, not more than one-half length of shell. 

 P'ropagation sexual. Testes of male originating in anterior half 

 of shell and arranged in form of concentric circles. 



Spirocypris passaica Sharpe. 



Plate IS- 



Spirocypris passaica Sharpe, Proc. U. S. Nat. Mus., XXVI, 1903, pp. 9, 82, PL 

 66, figs. 1-3. Passaic, New Jersey. 



Description. — ^Color brownish, with dark blue patches later- 

 ally, which connect dorsally with a dorsal band. Another patch 

 with a greenish tinge anteriorly, and still another in posterior 

 region. These both connect with dorsal band which runs longi- 

 tudinally on either side of hinge. Shell excessively hairy, hairs 

 coarse and backwardly directed. Seen from side anterior end of 

 shell wider than posterior, evenly rounded and dorsal margin 

 almost straight, sloping slightly more rapidly posteriorly. Ven- 

 tral margin slightly sinuate. Seen fromi above^ shell appears a 

 perfect elongate oval, widest just in front of dorsal transverse 

 dark band, which midway. Testes in male arranged in form 

 of concentric circles in anterior half of shell. Natatory setae 

 simple, reaching slightly beyond terminal claws. Latter moder- 

 ately curved, long as penultimate segment. Sense club long and 

 slender, three-fifths long as width of segment at its point of 

 attachment. Terminal claw of first foot moderately curved, 

 faintly toothed, and two terminal setae about same length. Ter- 

 minal claw of second foot one and one-half times length of ter- 

 minal segment. Furca slightly sigmoid in shape, twenty-three 

 times long as wide, and dorsal margin very weakly pectinate. 

 Terminal claw nearly straight, faintly toothed, cne-half long as 

 furca. Terminal setae little more than one-half length of ter- 



