BRITISH FRESH- WATER ENTOMOSTRACA. 31 



C. virens (Jurine). 



C. tristriata Baird (1). 

 Very common everywhere in small pieces of water. 



C. elliptica Baird. 



This has only been recorded by Baird (1), and by Brady &• 

 Norman (57) ; three localities in all. 



C. affinis Fischer. 



C. tessellata (in part) Brady (56) ; G. reticulata Brady & 

 Norman (57). 

 Apparently a rather rare species. 



C. obliqua Brady. 



A comparatively common form, not only in ponds, etc., but 

 also in lakes. Curiously enough, it is rarely alluded to by foreign 

 authors, although it is known to occur on the Continent. 



C. ornata 0. F. Miiller. 



There is but one published record for this species — namely, pond 

 at Shotton Hall, co. Durham. 



C. clavata Baird. 



Not certainly seen in this country since Baird's record from 

 "Copenhagen Fields, July 1836." It has, however, been found 

 on the Continent. 



C. trigonella Brady. 



The only record is that referred to by Brady in his 1868 mono- 

 graph (56). 



C. bispinosa Lucas. 



This may possibly be a brackish- water form, as it has only been 

 found near the sea. The single British locality is " a pool in a 

 small island at Yalentia, Ireland," but it has also been found in 

 Guernsey. 



Cyprinotus Brady. 

 C. prasinus (Fischer). 



Cypris strigata Baird (1) ; Cypris salina Brady (56). 

 Only found in situations where the water can be at least 

 occasionally brackish. 



Stenocypris Sars. 

 S. fasciata (O. F. Miiller). 



Herpetocypris fasciata Brady & Norman (57). 

 I have recently found specimens of this fine species near 



