248 [November, 



on the subcosta after the intercostal n., but, as a rule, distinctly before 

 it, though sometimes it might be called interstitial ; {h) the radial cell 

 can neither be called normally " divided " or " undivided," i.e., a radial 

 n. may or may not be present, either in one wing, or both, of a parti- 

 cular specimen. In some species it is more commonly present, in 

 others more commonly absent, but no positive rule can be laid down 

 about it. 



Mr. Cameron enumerates seven British species of Dineura, but 

 of these only the first three belong to Dineura as defined by Konow. 

 Indeed, the other four are not Nematides at all, according to his 

 system, but Blennocampides of the genera Mesoneura and Pseudodi- 

 neura. Our three species of Dineura (in Konow's sense) are very 

 easily distinguished as follows : — 



BRITISH DINEURA SPECIES. 



1. Ground-colour of head, antennae, legs, and the whole under-side of the body pale 



tawny (ochreous). A patch on the vertex, the dorsal surface of the thorax, 

 and that of the abdomen (except at its apex) black... 



D. nigricans, Christ. (^ virididorsata, C). 



— Head and thorax for the most part black, below as well as above 2. 



2. Abdomen, above and below, yellowish-red D. stilata, Klug. 



— Abdomen black above, testaceous below D. testaceipes, Klug. 



Stilata is a common species everywhere, I believe ; nigricans I 

 have not often met with, and testaceipes never, though there are a good 

 many specimens at South Kensington, and the " Monograph " calls it 

 a common species. 



SYMENOPTERA ACULEATA CAPTURED BY COL. YERBURY, R.A., 

 IN SCOTLAND, 1904. 



BY EDWARD SAUNDERS, F.R.S., (Sic. 



Colonel Yerbury with his usual kindness has collected Aculeata assiduously for 

 me during the past summer in t^cotland, but like most other collectors he has found 

 the season a disappointing one with regard to this section of the H^menoptera, and 

 I very much regret that I have nothing new to record among his captures ; still, 

 there are some interesting species, and his specimens are in such good clean con- 

 dition that they are always useful. Amongst other places he visited the sand-hills 

 in the neighbourhood of Nairn, from which I quite hoped something new might 

 have resulted, but apparently the fauna of these northern sand-hills is very much 

 more limited than that of one of our rich southern localities of like nature, such as 

 Deal, Lowestoft, &c. I asked especially for attention to be given to the early species 



