1909.] 183 



collector wlio has once seen it to recognise it at a glance. Equisefi 

 is not iincouunon here in June. Besides uiy own captures, I have a 

 good many specimens (also probably taken in Surrey) from the collec- 

 tion of the late Dr. Capron. 



T. agi'orum and equiseti might be mistaken by a beginner for 

 examples of the red-bodied DoJerus spp., but the neuration of the 

 wings at once distinguishes them. Aqrorum differs so much from our 

 other species, not only in neuration and small points of structure, but 

 in general appearance and habit, that one cannot wonder at a new 

 "genus" {Ermilia, Costa, 18G0) having been created for its reception. 

 Later authorities, however, have not followed Costa in this. All (I 

 believe), including Konow, agree in treating agroriim as a Taxonus. 



FURTHER NOTE ON OTHER SPECIES DESCRIBED IN 

 Mk. CAMERON'S MONOGRAPH. 



Olottianus, C. — This is stated by the author to resemble almost 

 exactly Emphytus iener, and Konow considered it to be certainly only 

 a form of that insect with abnormal neuration (four cubital cells in- 

 stead of three). I once took in this neighbourhood an insect exactly 

 corresponding to the description of glottianusi. Unluckily, I did not 

 examine the claws (bifid in ^«?2;/^_y/z<s, subapically toothed in Taxonus), 

 and I cannot now find the specimen. However, it was examined by 

 Konow, who i)ronounced it to be undoubtedly Emphytus tener, and I 

 feel no doubt myself that he was right. 



Fleiclieri, C, is treated by Konow in his " Catalogus " and else- 

 where as a synonym of T. nlbipes, Thorns. The latter, a rare Scan- 

 dinavian species, is practically unknown to me though I believe I have 

 seen it in Thomson's collection at Lund, and I do not know whether 

 Mr. Cameron accepts Konow's identification with it of Fletcheri. 

 In any case, not having seen the type of Fletcheri, C, nor heard of 

 any other capture of such an insect, I think it would be prudent to 

 await further information before definitely admitting either name 

 {■fletcheri, C.,or albipes, Th.) to our list of ascertained British species. 



In my next paper I propose to enter upon a very difficult subject — 

 that of the DoJerides. I am still very much in the dark as to the 

 actual occurrence in this country of some of the recorded species, and 

 should be very grateful to any collector who would send me for inspec- 

 tion examples of any of the rarer species mentioned in tlie Monograph, 

 and, of course, also of any that seem not to be mentioned there. Also 

 I should be particularly glad to see any specimens of entirely black or 



