76 THE ENTOMOLOGIST. 



Eadclifife-on-Trent, May •25th, 1912, J. W. Carr. One male, 

 one female. 



Radcliffe-on-Trent, May 29th, 1912, J. W. Carr. One male. 



It seems very probable that confusion exists between this 

 species and C. griseipennis, Pict., and that more than one writer, 

 including myself, has recorded from Continental rivers what is 

 here termed C. venosa under the name of griseipennis. Klapalek 

 has applied the latter name to an insect which is, in some 

 respects, very like C. venosa, but which is rather more delicate 

 looking, with less strongly marked neuration and with a sharply 

 defined horseshoe-shaped marking between the ocelli. 



With regard to the use of the name of venosa, I may say at 

 once that it seems very improbable that Stephens knew anything 

 about the insect now under consideration. I have not access to 

 the Illus. Brit. Entom. Mandib. vi. p. 139 (1836), but Mr. 

 Herbert Campion has very kindly sent me a copy of what is 

 there written about Chloroperla venom, and as far as I am able 

 to judge it does not apply to Klapalek's species. 



The description is as follows : — 



" Sp. 4, venosa. Rufescente-ochracea, oculis atris, collaris 

 lateribus ahdominisque dorso nigris, alls Jiavescente-viridihus nervis 

 fuscescentihiis. (Long. corp. 4^- lin. ; exp. alar. 11^^ lin.) 



Pe. venosa. Steph. Catal. 315. No. 3542. 



Eeddish ochre, with a greenish tinge ; eyes and ocelli black ; 

 collar with its lateral margins broadly black ; abdomen black 

 above, its sides ochreous-green ; legs greenish ochre ; antennte 

 dusky ochreous at the base ; wings yellowish green with fusce- 

 scent nervures. 



Found in June, near London." 



Mr. Campion has also made a very thorough search in the 

 British collections in the Natural History Museum for anything 

 that might throw light on what Stephens's venosa really was. 

 The difficulties and unsatisfactory features of such a search have 

 already been alluded to elsewhere (Entom. 1911, p. 82). A 

 specimen, against which Stephens's drawer label "venosa" has 

 been placed, was received by the Museum direct from J. C. Dale 

 in 1862, and consequently could not have been Stephens's type; 

 it appears to be grammatica. Further, Mr. Campion has practi- 

 cally satisfied himself that none of the examples of Ckloroperla 

 which he has examined are conspecific with one of Prof. Carr's 

 specimens which I had sent to him for comparison. My best 

 thanks are due to him for his painstaking efforts to solve 

 the difficulties surrounding the identification of Stephens's 

 species. 



I suppose that Klapalek, following the Brit. Mus. Cat. 

 (Phryganides-Perlides, 1852), identified his species with the 

 insect that Pictet had described and figured (Hist. Nat. Neur. 

 Perl. 297, 62, pi. 35, fig. 1-3) under the name of venosa, Steph. 



