408 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



nearly all the ponds and swamps of this region and from ditches 

 and shallow sphagnum swamps near Roby, Indiana, May G, 190G. 



In some respects this species somewhat superficially resembles the 

 figures given for Candona ewplectella Robertson in Brady and Nor- 

 man.' 7 Alcoholic or formalin specimens retain a purplish appear- 

 ance. Furthermore, so plump are these forms that when placed in 

 water in Syracuse glasses for superficial examination instead of lying 

 on their sides, as is so commonly the case with most Ostracods, they 

 nearly invariably remain dorsal or ventral side up. 



Type-locality. — Swampy ponds, Jackson Park, Chicago, Illinois. 



Type.— Cut. No. 38345, U.S.N.M. 



Subfamily CYCLOCYPEIDIN^. 

 7. CYCLOCYPRIS Brady and Norman, 1889. 



Cypris Authors. 1 785-3 sl'i i. 



Cypria Zenker, Wieg. Areliiv. f. Naturg., XX Jahrg., T, 1854. 



Cyclocypris Brady and Norman, Trans. Royal Dublin Soc. 1889, p. 70. — 

 Vavra, Arch. Naturw. Durchforsch. Bohmen, VIII, 1891, p. 07. — Muller, 

 Orig. Abh. aus dem Gesamt. der Zool., XII, Heft 30, 1000, p. 39.— Kaue- 

 mann. Revue Suisse de Zool., VIII, Fasc. ;'>, 1000, p. 319. — Sharpe, Proc. 

 U. S. Nat. Mus., XXVI, 1903, p. 994. 



Natatory seta? very long. Terminal segment of second foot long 

 and narrow, three times as long as broad. Ductus of numerous lone- 

 filaments and no distinct central axis. Fourth segment of second 

 antenna of male with no sense organ on its distal end. 



a. Length at least 0.8 mm. Anterior edge of furea about three times length of 

 terminal claw. Terminal claws strong, nearly straight, weakly bent near 

 end. Furca toothed on anterior edge, and with a comb of teeth on its 



side 0. glooosa. 



<r. Length ;it most 0.55 mm. 

 //. Dorsal seta evident. 

 c. Furea of female without a comb of teeth near its base. Terminal claws 



hook-shaped C. forbesi. 



c'. Furca of female with a comb of teeth near its base 0. iiii<iin<r<t. 



ir. Dorsal seta lacking, or seen with difficulty. Terminal claws but slightly 

 curved : G. Icevis. 



13. CYCLOCYPRIS L-ffiVIS (O. F. Miiller). 



Plate L, fig. 5; Plate LIV, figs. 5-7. 



Cypris Icevis O. V. Mvujer, Entomos. sen Insecta testacoa, etc., I7sr>. p. ~>2. 



pl. in. figs. 7-9. 

 Cyclocypris Iwvis Vavra, Arch. Naturw. Durcbforscli. Bohmen, VIII, Heft •">. 



1891, p. 68, figs. 21 -26. — Katjfmann, Revue Suisse de Zool., Yin, Fasc. 



::, 1900, p. 320, pl. xix, figs. •_':: 25; pl. .win. figs. 12; pl. xxix, fig. 17.— 



.Mi'u.i 1:. Zoologica, XII. Hell 30, 1900, p. 41. pl. x. figs. 14-22. 



"Trans. Royal Dublin Soc, IV, L889, p. 105. 



