BRITISH FRESH- WATER ENTOMOSTRACA. 537 



C. lucidulus Rehberg [Schmeil (44) and Lilljeborg (41) = 

 C. minutiis]. 



C. minutus Clans; Scott (20, 49, 52), Scourfield (28, 29). 



C. horridus Fischer [Schmeil (44) = C. northumhricus ; 

 Lilljeborg (41)]. 



C. northumhricus Brady (35), Scott (46), Scourfield (29). 



C. gracilis Sars [Lilljeborg (41).] 



C. inornatus Scott (20, Part VII.). 



C. trispinosus Brady [Schmeil (44), Lilljeborg (41)]. 



Not uncommon in the south and east of England, but not yet 

 seen in Scotland, Ireland, or Wales. 



C. hirticornis T. Scott [Lilljeborg (41) = C. megalojys ; Scott 



(20, Part V.)]. 



C. suhsalsus Brady (37). 



More usually found in situations within the influence of brackish 

 water, but also occasionally in perfectly fresh water, 



C. palustris Brady [Brady (35)]. 



This species is scarcely a fresh-w^ater form in the strictest sense, 

 as it seems to be confined to water containing at least a slight 

 trace of salt. Messrs. T. & A. Scott (51) have recorded a variety 

 which they have named C. jyalustris var. elongatus. 



C. schmeilii Mrazek [Lilljeborg (41), T. k A. Scott (52)]. 

 Peculiar to Scotland so far as shown by our records. 



C. bidens Schmeil [Schmeil (44)]. 



I only know of one British locality for this species — namely, 

 the Water-Lily Pond, Kew Gardens, where I found it in May, 

 1902 (32). 



C. crassus Sars [Schmeil (44), Lilljeborg (41)]. 

 Attheyella sjnnosa Brady (35), Scott (46). 



C. pygmaeus Sars [Schmeil (44), Lilljeborg (41)]. 



C. cryptoruTYh Brady (34). 



Attheyella cryptorum Brady (35), Scott (46). 

 One of our commonest Copepods, but it must usually be sought 

 for by washing wet mosses and dense masses of vegetation. 



C. zschokkei Schmeil [Schmeil (44)]. 



Attheyella propinqua T. Scott (20, Part III.). 



