North American Fres\-water Ostracoda. 437 



•inal claw and situated less than the width of the ramus 

 from it. 



This species greatly resembles Cypris fuscata Jurine in 

 many respects, but is easily distinguished from it by the 

 greater length of the natatory setae, the markings on 

 the shell, the character of the caudal ramus, and by 

 other minor details. 



Normal, 111., May 20, 1881 (Coll. 111. State Lab. Nat. 

 Hist.); Burlington, Ohio, March, 1893 (Turner); Atlanta, 

 Ga., January, 1894 (Turner); Kent county, Del., March 

 5, 1894 (Turner). 



Cyprinotus incongruens Ramdohr. (PI. XLIII., 

 Fig. 1,2.) 



1808. Cypris incongruens, Ramdohr (54, p. 86, Taf. III., Fig. 1- 



12, 15, 16, 18-20). 

 1820. Ifonoculus condiacens, Jurine (3(5, p. 171, PI. XVII., Fig. 



7. 8). 

 1820. Monoculus niber, Jurine (36, p. 172. PI. XVIII., Fig. 3, 4). 



1820. Monoculus aurantius, Jurine (36, p. 173, PL XVIII., Fig. 



5-12). 



1821. Cypris fusca, Straus (61, p. 59, Tab. I., Fig. 1-16). 

 1844. Cypris aiirantia, Zaddach (74, p. 37). 



1850. Cypris aurantia, Baird (2, p. 159. Tab. XIX., Fig. 13). 

 1853. Cypris incongruens, Lilljeborg (39, p. 119, Tab. IX., Fig. 



6, 7; XI., Fig. 1-4; XII., Fig. 6). 

 1855. Cypns aurantia, S. Fischer (24, p. 650, Taf. I., Fig. 29- 



.31, 60, 61. 

 1868. Cypris in-ongruens, Brady (6, p. .362, Pi. XXIII., Fig. 16- 



22). 

 1868. Cypris fusca, Fric & Nekut (27, p. 47, Fig. 28). 

 1872. Cypris fusca, Frlc (26, p. 227, Fig. 6). 

 1889. Cypris incongruens, Brady & Norman (9, p. 73, PI. XII., 



Fig. 8, 9). 

 1891. Cypris incongruens, Vdvra (68, p. 95, Fig. 32^ -32' ). 

 1893. Cypris incongruens, Turner (63, p. 8, PI. I., Fig. 9-16; 



II., Fig. 17-21). 

 1895. Cyprinotus incongruens. Turner (35, p. 330, PI. LXVIII., 



Fig. 9-16). 



Length 1.30 mm., height .75 mm., width .60 mm. 

 The shell is orange to ochreous yellow, which is some- 

 what intensified in spots to an almost purple tint espe- 



