of the North Atlantic and of North- Western Europe. 721 



males in Cypris virens, Jurine ; C. incongruens, Ramdohr ; C. mareotica, Fischer ; 

 C. ungulatUj Moniez ; C. halnearica, Moniez ; also in the genus Herpetocypris, as 

 exemplified in H. spinosa, Moniez,* an Asiatic species ; and in the genus Cypri- 

 dopsis, as evidenced in C. villosa, Jurine. 



In the same year Vdvra, in his work on the Ostracoda of Bohemia, described 

 and figured the male of C. incongruens. 



Among Hungarian Ostracoda recently sent to us for examination by Dr. 

 Daday, we found C. incongruens to be the j^revailing species, and in many of the 

 gatherings both sexes were present. 



Males of Cypris have thus been found in the south and east, but aS far as 

 we know the curious fact remains that no representatives of that sex have been 

 observed in northern or western Europe north of Spain. 



Cypris incongruens, Ramdohr. 



(PI. Lxiv., figs. 17, 18 ; PI. Lxvm., figs. 22, 23.) 



We figure the shell, second maxilla, and ejaculatory duct of the male of this 

 species from a Hungarian specimen received from Dr. Dad ay. 



Genus Cypeinotus, G. S. Brady, 1886.t 



This genus was established by shell characters to receive an Ostracod from 

 Ceylon. Professor Sars has raised the same species, as well as the earlier 

 described Cypris dentato-marginata of Baird, from Australian mud. Of this last 

 species he has reared the males, and drawn up the following generic character : — 



" Shell rather thin, compressed, oval or subtriangular, height considerably 

 exceeding the half length ; dorsal margin greatly vaulted ; ventral margin 

 almost straight. Valves rather unequal, the right being overlapped by the left 

 both anteriorly and posteriorly, but sometimes dorsally produced far above the 

 level of the latter. Free edges of the left valve smooth, and having at either 

 extremity a rather broad hyaline border, those of the right armed with a regular 

 series of small tuberculiform teeth. Inner duplicatures of both valves rather 

 narrow. Natatory setse of lower antennee very elongate, reaching far beyond the 

 terminal claws. Palpus of first pair of maxillae rather narrow, last joint linear ; 

 masticatory lobes of middle length. Caudal rami narrow, claws smooth, seta of 

 dorsal edge close to the claws. Propagation sexual. Prehensile palps of second 

 pair of maxillse in male rather powerful, unequal. Copulative organs compara- 



* Perhaps, however, this may prove not to be a true Herpetocypris. 



\ " Entomostraca collected by Mr. A. Haly in Ceylon." — Lian. Soc. Journal — Zoology, vol. xix., p. 301. 



