North, American Fresh-water Ostracoda. 465 



long- seta of the terminal segment is as long as the last 

 three segments. 



Caudal rami (Fig. 11) rather stout, about ten times 

 as long as wide. Terminal claw stout, nearly smooth, 

 curved beyond the middle, and three fifths as long as 

 the ramus; subterminal claw two thirds as long as the 

 terminal one, with a comb of remarkably long teeth 

 near the tip. These teeth are longest distally, decreas- 

 ing in length towards the base of the claw. Terminal 

 caudal seta half as long as the subterminal claw; dorsal 

 seta very slender, nearly four times width of ramus from 

 subterminal claw, up\vardl3' curved, not longer than 

 ramus is wide, situated slightly above center of ramus. 



This Cypria would attract attention from the manner 

 in which the right valve overlaps the left, and it might 

 be taken for C. inequivalva Turner (63, p. 6) except for 

 differences in the second feet, in the markings of the 

 shell, in the caudal rami, and some others. 



Described from a number of specimens in the collection 

 of the Illinois State Laboratory of Natural History, 

 taken in the Zoological Gardens at Cincinnati, Ohio, 

 Aug. 30, 1881 . Not as yet known from an3'^ other locality. 



Cypria exsculpta S. Fischer. (PI. XLVII., Fig. 4). 



185.3. Cy 'ris elejaii'ida, Lilljeborg (39, p. 206). 

 1855. Cypris exsculpta, S. Fischer (24, \). 652. PI. XIX.. Fig. 36-38). 

 1864. Cypris striolata, Brady (4, p. 60, PI. III., Fig. 12-17). 

 1868. Cypris striolata, Brady (6, p. 372, PI. XXIV., Fig. 6-10). 

 1880. Cyprisgranulata,BjOhertjSoa (55, p. 18). 

 1887. Cypris striilata,'n.err[ck (34. p. 29, PI. IV., Fig. 3). 

 1889. Cypria exsculpta, Brady & Norman (9, p. 68, PL XI., 

 Fig. 1-4). 



1894. Cypria exsculpta, Turner (64, p. 1.3, PI. VII., Fig. 2-8). 



1895. Cypr:a exsculpta. Turner (35, p. 305, PI. LXX., Fig., 1-8; 



LXXII., Fig. 3). 



Length .58 mm., height .37 mm., width .25 mm. 

 Shell thin; clear yellow to transparent. 

 30- 



