214 



Mr. R. Gurney on the British Species 



M 2 is simple; it is very faint, and the edge of. the wing is 

 folded over at the point where a branch might be. 



Fig'. 2. 



Eophlebotomus cmneetens, sp, n. 



XXVI. — The British Species of the Cupepod Genus Nitocra y 

 Boeck. By Robert Gurney, M.A. 



The species of the genus Nitocra, hitherto recorded as 

 British, are — N. hibernica (Brady), N. palustris (Brady), 

 N. palustris, var. elongata, Scott, N, simplex, Schmeil *, 

 N. oligochcela, Giesb., and N. (Ameira) amphibia, Brady. 

 Of these N. hibernica is a purely fresh- water species, quite 

 distinct from the rest, and N. simplex is also undoubtedly 

 a distinct species ; but, concerning the remaining species, 

 there is some confusion as regards their validity and relation- 

 ship to one another. Prof. Sars, in his ' Crustacea of Norway/ 

 has treated N. palustris, N. oligochceta, and Ameira amphibia 

 as synonyms of N. typica, Boeck, while he regards N. palus- 

 tris, var. elongata, Scott, as identical with N. spinipes, Boeck. 

 With regard to N. oligochceta and A. amphibia, he is 

 unquestionably right, but some uncertainty remains about 

 N. palustris (Brady). Having recently met with the species 

 attributed by Prof. Sars to N. spinipes, Boeck, I was led 

 to re-examine specimens which I had previously referred to 

 N. palustris, and found that, in all cases, these specimens 

 were properly to be referred to N. spinipes. This species is 



* Ann. & Mag. Nat. Hist. (9) v. p. 356 (1920). 



