DR. G. S. BRADY ON FRESHWATER 



[Feb. 2, 



by Dr, Baird (Proc. Zool. Soc. 1850, p. 254) ; and L. angasi of the 

 same author, 1866, which is of a pale horny colour, and is common in 

 the rain-pools about Adelaide. L. viridis is characterized by its fine 

 green colour, by its oval carapace covering less of the body than in 

 L. angasi, and the edges of the lower half of its length being serrated ; 

 L. angasi is distinguished by its horny colour, its rounded carapace 



Fig. E. 



Lepidtorus viridulus. 



covering nearly two thirds of the body, and by the smooth ed^es of 

 the sides of the carapace. 



" L. viridulus differs from L. avgasi in colour, in the carapace 

 covering more of the abdomen, its keel limited to the hinder part 

 and in the narrower and mere spathulate tail-flap." — Trans. & Proc. 

 & Report of the Philosophical Society of Adelaide, South Australia, 

 for 18/8-9, p. 136 (published 1879), afterwards called the Royal 

 Society of South Australia. 



Order OSTRACODA. 



Family Cypridid^. 



Genus Cypris, Miiller. 



1. Cypris viridula, n. sp. (Plate VIII. figs. 1, 2.) 



" Carapace oblong, compressed, reniform, greatest height situated 



in the middle, and somewliat less than half the length ; seen from 



the side the extremities are well rounded, the anterior somewhat the 



narrower of the two, dorsal margin almost flat or very slightly arched, 



ventral sinuated in the middle ; seen from above, compressed, ovate, 



twice as long as broad, widest in the middle, gradually tapered 



towards the anterior extremity, which is subacuminate, posterior 



extremity narrowed and rounded ; surface smooth and polished, the 



