50 G. O. Sars. 



Cypris bennelottg, G O. Sars, Fresh-water Entomo- 

 straca of New Zealand, p. 24, PI. IV, figs. 1, a — d. 



Syn. Chlamydotheca australis, Brady. 



Of this characteristic form, described and figured by the 

 present author in the above-quoted paper, numerous specimens 

 were found in 2 different samples taken by Mr. Whitelegge 

 from waterholes at Bourke Street. It is rather singular, 

 that not even a single specimen of this species developed 

 in my aquaria, though empty shells were not uncommon in 

 the mud, with which these were prepared. 



Distribution. — New Zealand (G. O. Sars). 



23. Cypris sydneia, King. 



Cypris sydneia, King, 1. c. p. 65, PL X. M. 



Cypris sydneia, G. O. Sars, Fresh-w. Ent., N. Z., p. 27, 

 PI. IV, figs. 2, a-c. 



Syn. Cypris ciliata, Thomson. 



This form, which exhibits so close a relationship to the 

 European species, C. incongruens, developed rather plenti- 

 fully in some of my aquaria, and grew to a much larger 

 size than the specimens raised by the present author from 

 New Zealand mud. It was also found in great numbers in 

 some samples taken by Mr. Whitelegge from waterholes at 

 Bourke Street, and in addition to these, a single, young- 

 specimen occurred in the sample first received from Prof. 

 Ramsay, and taken from the Waterloo Swamps. 



Distribution. — New Zealand. 



24. Cypris leana, G. O. Sars, n. sp. 

 (PL 7, figs. 2. a— d). 



Specific Characters. — Shell large, seen laterally, oval 

 reniform, greatest height in the middle, anterior extremity 



