14 BULLETIN OF THE LABORATORIES 



ally-compressed ellipse. The two extremities are of about 

 the same width and the line of contact is straight. 



The natatory setae of the antennae [fig. 6] extend far be- 

 yond the terminal claws and are much longer than the entire 

 limb. The claws on the tip of each antenna are long and slen- 

 der. They are longer than the last three joints. 



In the male the second maxillae [fig. 8] are dissimilar. 



The tip of the second foot [fig. 2] bears two short 

 ectally projecting setae and two long setae which project back- 

 wards as far as the base of the antepenultimate joint. 



The post-abdomen [fig. 7] is short, stout and curved. The 

 terminal claw is strong and about half as long as the ramus. 

 About the middle of the caudal margin of each abdominal 

 ramus there is a short filamentous seta. 



Habitat: Burlington Ohio, March 1893. Large numbers 

 were found in a small shallow pond. Atlanta Ga., January to 

 May 1894. These were very abundant. Length 0.64 mm. 

 Height 0.43. Kent Co., Delaware, March 31st, 1894. These 

 were collected for me in Jones Creek by Prof. L. D. Hileland. 

 Length o. 54 mm. Height o. 36 mm. 



Cypria iucqiiivalva, Turner. 



Additional locality : Atlanta, Ga. On the third of Febu- 

 ary 1894, I found a large number of these in South River 

 Slough. Length 0.48 mm. 



GENUS CYCLOCYPRis, Brady and Norman. 

 Cyclocypris laevis, (O. F. Miiller) Vavra. 



{Plate VII; Jig. g-/i] 



Cypris ovum, . . . Brady : Recent British Ostracoda (1868) p. 



373; pi. XXIV, fig. 31.34, 43 45, and pi. XXXVI, fig. 8. 

 Cypris laevis, . . . Brady and Robertson : Marine and Fresh 



Water Ostracoda of the N. Atlantic and N. W. Europe. (1889) p. 69-70. 

 Cyclocypris laevis, . . . Monographic der Ostracoden Boh mens. 



(1891) p. 68-71 ; fig. 21, 1-6. 



Length, 0.51 mm — 0.57 mm. Width, about 0.4 mm. 



