9'B4 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



Vavra retains Aeoci/pris a.s a group of this genus as being nonsexual 

 and a group Stenoeypris as being sexual. Kaufniann discards this 

 genus and revises under a new name, Dolerocyprla^ on the ground that 

 Cypris faseiata O. F. Midler, of Sars 1890, is deemed Sttmocypris l\y 

 him, even though furca has an evident dorsal seta. This seems to me 

 to be an insufficient reason for establishing a new genus. As the shell 

 of this species is long and narrow, it might well be regarded as a 

 transition form between Oypn's and ^fetioeypris, but still as a C'yprw., 

 possibly as the type of a new group. The Oyjjrlsjyt.sclata of Brady 

 and Norman, 1889 (pi. xii. fig. 1) is without the furcal dorsal seta; so 

 evidently a Stenoeypris. 



No American forms known. 



16. EURYCYPRIS G. W. Muller, 1898. 



Evrycypru G. W. Muller, Ostrac. aus Madagas. and ( )st-Afrika, Al)liand. Seiick. 

 Naturf. Ges., XXI, 1898, p. 263. 



Shell extraordinarily broad. Natatoiy seta reach tips of end claw's. 

 First foot four-segmented from union of third and fourth segments. 

 Furca normal, slender, smooth; claws smooth. Sexual. This genus 

 has been established hy MiUler (1898), to include those forms of the 

 subfamily Cypridinae having the third and fourth segments of the first 

 foot united; foot therefore four-segmented, and with excessively ])road 

 shells. 



No American fonns known. 



17. CYPRICERCUS Sars, 1895. 



Cypriccrcus Sars, On some S. African Entomos. raised from dried mud, Christ. 

 Vid. Selsk. Skr. Math. Naturw. Klasse, No. 8, 1895, p. 37. 



Shell as in Oypris, smooth, narrow, oblong, as seen from the side. 

 Natatory sette reaching tips of end claws. Feet as in Oypri.s. Furca 

 excessively developed, toothed on dorsal margin, and longer than 

 half-length of shell. 



Sexual, the spermatic ducts of male forming a dense coil in the 

 anterior part of each valve. This genus was established I)}" Sars, to 

 receive those forms resembling Cypyru in most respects, except that 

 the furca is unusually w ell developed and spermatic ducts as al)ove. 



No American forms known. 



18. CYPRIS O. F. Muller, 1792. 



Oyprh O. F. Muller, Entomos. seu Insecta testacea, etc., 1792. — Brady, A 



Monog. of the recent British Entomostraca, Trans. Linn. Soc, XXVI, 1868, 



Pt. 2, p. 360. 

 Cijpnnotm Brady, Notes on Entomos. coll. by Mr. Haley in Ceylon, Jour. Linn. 



Soc, XIX, 1885, p. 301. 

 Heterocypris .Claus, Beitriige zur Kenntniss der Siisswasser-Ostracoden, Arb. 



Zool. Inst. Wien, X, 1892, p. 7. 



