QQ [March, 



ten bristles, the membranous, hairy, apical flap being broad. The 

 finger of the chisper (Fig. A., F) is slenderer than in C. gallincB. 

 It bears four hairs at the ventral edge, all being of about the same 

 length, none being prolonged as in C. gallina. We are indebted to 

 Mr. N. II. Joy, of Bradfield, near Eeading, for one ^ taken from a 

 hole in a hollow tree near Reading ; the hole had been occupied con- 

 secutively by a woodpecker, an owl, and a starling. 



Tring Park, Tring : 



January 20tk, 1906. 



RYMENOFTERA ACULEATA TAKEN BY COL. YERBURY, R.A. 

 IN SCOTLAND, 1905. 



BY EDWARD SAUNDERS, F.R.S. 



Colonel I'erbury with his usual good fortune has succeeded during his last 

 season's stay in Scotland in capturing two of our rarest Aculeales—Pemphredon 

 wesmaeU, Mor., and Crahro carbonarius, Dahlb. ; of the former, in British Collec- 

 tions, I have only known of one specimen, a female without locality label, which 

 formed part of Shuckard's Collection, standing with specimens of shucJcardi, Mor., 

 under the old and now discarded name of unicolor, F. This individual, which is 

 now in my possession, is peculiar in having the emai'gination of the clypeus 

 unusually large and deep (almost semicircular), so that when I received Colonel 

 Yerbury's captures, in which it has only a very slight, narrow^ emargination, I hoped 

 to have had a new species to record. 1 could not, however, determine them to my 

 satisfaction from the descriptions of any of the Palsearctic species, so I sent them to 

 Dr. Kohl, of Vienna, for his opinion. He returned them to me as P. loesmaeli, 

 Mor. I then sent him Shuckard's example ; this he has returned with the observa- 

 tion that after a careful examination of all his specimens he finds that the emargina- 

 tion of the clypeus in wesmaeli is unusually variable, and he considers both forms 

 to be referable to that species. I have therefore reluctantly to refrain from adding 

 another new species to those which Colonel Yerbury has already discovei'ed ; but 

 it is most satisfactory to get a definite locality for wesmaeli and to secui'e more 

 specimens of it ; these were taken at Nethy Bridge in June and July. It is very 

 distinct from our other species, approaching in size Pemphredon higuhris, Dahlb. ; 

 it is, however, easily distinguished by its square vertex and very largely punctured, 

 not rugose, mesonotum, as well as by the position of the second recurrent nervure, 

 which is received either in the first submarginal cell near its apex, or unites with 

 its actual apical nerve, from shucJcardi, Mor., its larger size, the much coarser 

 puncturation of the mesonotum and the emarginate clypeus will easily dis- 

 tinguish it. 



Dr. Kohl has asked me to point out that in his treatise " Zur Kenntniss der 

 Pemphredonen," in Ann. K. K. Naturh : Ilofmuseums, V, p. 50, under P. austriacus, 

 Kohl, when pointing out the distinctions between that species and wesmaeli he 

 omitted to mention that in austriacus the centre of the clypeal emargination is 



