﻿80 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



Spirocypris Sharpe, Proc. U. S. Nat. Mus., vol. 26, p. 981, 1903. 

 Strandesia G. W. Muller, Das Tierreich, vol. 31, p. 186, 1912. 



Rather elongated valves, fairly tumid and higher in front than 

 behind. Left valve projects slightly beyond right in front. Third 

 masticatory process with two long well-developed spines. Furcal 

 ramus long but not as long or as powerfully developed as in Stran- 

 desia. Furcal ramus equal to about one-third the length of the valves. 

 Terminal claw not more than half the length of the ramus. Dorsal 

 seta shorter than the terminal seta and removed from the sub terminal 

 claw by one or two times the width of the ramus. 



Remarks. — G. W. Muller (1912) has lumped the two genera Stran- 

 desia and Cypricercus together in Strandesia. I am of the opinion held 

 by Sars (1928) and Furtos (1933) that these two genera should be 

 kept separate. While closely related, they differ in several important 

 respects, namely, in the universal presence of males in Cypricercus, 

 the less well-developed caudal rami, and in the fact that the genus 

 Strandesia, is, so far as is now known, confined to the southern regions. 



CYPRICERCUS EPISPHAENA G. W. MUlIer 



Figure 14, s 



Cypricercus episphaena G. W. Muller, Deutsch. Siidp. Exped., vol. 10, p. 155, 



1908. 

 Strandesia episphaena G. W. Muller, Das Tierreich, vol. 31, p. 188, 1912. 



Specific characters. — Female: Height about half the length, highest 

 in the anterior third of the valves. Dorsal margin slightly rounded 

 and slopiag gently to posterior extremity. Anterior extremity broad- 

 ly rounded; posterior extremity tapering to a rounded point, which is 

 terminated by a well-developed spine located about three-sevenths 

 the height of the shell from the ventral margin. Ventral margin 

 weakly S-shaped and convex. Left valve without posterior spine. 

 Second antennae with natatory setae which do not completely reach 

 the tips of the terminal claws. First leg with a terminal claw that is 

 short and poorly developed. Furca curved, the dorsal margin with 

 seven or eight groups of fine spines. Terminal claw about one-tliird 

 the length of the ramus. Terminal seta about half the length of the 

 terminal claw. Length 1.22 mm.; height 0.53 mm. 



Male: Unknown. 



Material examined. — Nineteen specimens were taken from a reservoir 

 in Pirissinunga, Sao Paulo by Dr. Kleerekoper (March). 



Reported distribution. — South Africa (Muller, 1908). 



CYPRICERCUS ROTUNDUS, new species 

 Figure 14, t-w 



Specific characters. — Female: Shell shape similar to C. juscatus 

 although not as large. Height of shell distinctly greater than half 



