986 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



5. CYPRIS VIRENS (Jurine). 



Plate LXVI, figs. 4-6. 



Monocnlvs vircns Jurine, Histoire des Monocles, qui se trouvent anx environs de 

 Geneve, 1820, p. 174, pi. xviii, figs. 15-16. 



Ciijwu pilo^d 'Ak^mxcu, Synopseos Crustaceoruiii Prussicoruni rrodronius, 1S44, 

 p. 36. 



Ci/prix trixtridta Baird, The Nat. Hist, of the British I^ntomos., Ray Society, 

 1850, p. 152, pi. XVIII, figs. 1-3. 



Ci/pris ornata Fischer, Abhand. iiber das Genus Cypris und dessen bei Peters- 

 burg vorkommende Arten, Mem. des savants etrangers des sciences de St. 

 Petersbourg, VII, 1851, p. 157, pi. ix, figs. 7-10. 

 C'l/priK puhera Fric and Nekut, Korysi zemfi cesk(^, Prag. Zeits. Ziva, v. J., 

 1868, p. 46, fig. 26. 



Ciipria ventricosa Brady and Robertson, The Ostracoda and Foraminifera of 

 Tidal Rivers, Ann. and Mag. Nat. Hist., VI, 1870, p. 12, j)l. iv, figs. 1-3. 



(Ujpris lu'lena Moniez, Liste des Copepodes, Ostracodes, etc., recueillis ii Lille en 

 1886, Bull. Soc. Zool. de France, 1887, p. 2. 



Cypris rirens Zaddach, Synopseos Crustaceorum Prussicoruni Prodromus, 1844, 

 p. 35. — LiLLJEBORG, De Crustaceis ex ordinibus tribus, 1853, p. 117, pi. viii, 

 fig. 16; pi. IX, figs. 4-5; pis. x, xii, and xix. — Brady, AMonog. of the recent 

 British Entomos., Trans. Linn. Soc, XXVI, Pt. 2, 1868, p. 364, pis. xxiii, 

 XXXVI, fig. 1. — Robertson, Fauna of Scotland, with special reference to 

 Clydesdale and the western districts, Proc. Nat. Hist. Soc. Glasgow, IV, 

 1880, p. 14. — Herrick, Cont. to the Fauna of the Gulf of Mexico and the 

 South, Mem. of Denison Scd. Assc, I, 1887, p. 22. — Brady and Norman, A 

 Monog. of the marine and fresh water Ostracoda, Sec. I, Trans. Royal Dub- 

 lin Society, 1889, p. 75. — Vavra, Monog. der Ostrac. Bohmens, Arch. 

 Naturw. Durchforsch. v. Bohmen, VIII, 1891, p. 102, figs. 3-5; fig. 36.— 

 Turner, Fresh-water Ostracoda of the U. S., Report State Zoologist of Min- 

 nesota, 1895, p. 321, pi. Lxxiv, figs. 3-3e. — Sars, On a new Ostracoda, Stnio- 

 cypris clierreaxi Sars, with notes on other Entomos. raised from dried mud, 

 Archiv. f. Math. Natur. Christiana, 1896, p. 24. 



Length, l.<)9 mm.; heig'ht, 0.95 mm.; })readth, 0.90 mm. 



Seen from the .side (lig. 4) the shell is highest just back of the eye- 

 spot, the height being much more than one-half the length. The 

 upper edge is "himiped" just back of the eyespot. Anterior and 

 posterior extremities nearly similar, rounded, the posterior dorsal 

 margin sloping more gradually than the anterior. Shell covered with 

 short hairs. 



Seen from above (tig. 5) the shell is rather broadly egg-shaped, nar- 

 rowed anteriorl}^, the greater breadth being less than the height of the 

 shell. The anterior extremity is tipped with l)luish-black, the entire 

 dorsal side is the same color, while in the region of the eyes are two 

 decidedly yellowish areas which extend diagonally downward and 

 anteriorly for about one-half width of shell. Margins of shell with 

 "■pore-canals.'' 



The natatory sette of the second antenna? reach to the end of the 

 terminal claws. The spines on the first maxillary process are toothed, 



