BRITISH FRESH-WATER EXTOMOSTRACA. 35 



C. angulata G. W. Miiller [Muller (66)]. 



C. Candida (in part) Brady (56), PI. 25, figs. 8 and 9. 



The angulation of the shell behind, and the net-like markings, 

 separate this species from G. caiulida. The specimens figured by 

 Brady came from Gravesend, but I know of no other definite 

 records. 

 C. elongata Brady & Norman. 



Only recorded from Lough Neagh, Ireland. 

 C. lactea Baird. 



C. lactea and C. detecta Brady (56). 



Not an uncommon form in this country, though seldom men- 

 tioned by Continental writers. 



C. eompressa (Koch). 



C. pubescens Brady & Norman (57), 1889. 

 C. pubescens (Koch). 



C. abbreviata Brady MS. (Scourfield, 26). 

 Hartwig seems to think (62, pp. 104 — 108) that the two fore- 

 going species, as recorded by Brady <fc Norman (57), should be 

 united under C. eompressa. He further states, however, that 

 the true C. pubescens Koch also occurs in England, as he has 

 had from Canon Norman specimens which had been collected 

 in Norfolk (I.e. p. 126). 

 C. stagnalis Sars. 



C. ambigua Scott (20, 46). 

 Apparently a rare species. Only recorded from Lochgelly Loch 

 and Loch Fitty, Fifeshire (46). 



C. zenckeri Sars. 



Only recorded from a pond at Ferry Hill, co. Durham (57). 



C. rostrata Brady & Norman. 



Not a very common species. 

 C. marchica Hartwig [Muller (66) = G. rostrata~\. 



Specimens of this species (which very closely resembles C. 

 rostrata) from Lanarkshire were sent by Canon Norman to Herr 

 Hartwig, who has recorded the fact in (62) p. 99. 



C. fabaeformis (Fischer). 



C. diaphana Brady & Robertson (58). 

 According to Hartwig (62, pp. 112 — 114) the C. fabaeformis 

 of Brady k Norman's monograph (57) is not really Fischer's 

 C. fabaeformis, but a distinct species, which he calls G. bradyi. 



