JQ [January, 



ON FOUK ADDITIONS TO THE LIST OF BRITISH HYMENOPTERA. 

 BY EDWARD SAUNDERS, F.R.S.. &c. 



Pempheedon Momo, Fab. (E. Saund., Hjm. Acul., etc.). 



This species has been split up by Thomson iuto two, which he has 

 called clypealii^ and c.arinatns ; as we have ceilainly both of these in 

 this conntrv, I wall give their characteristics. Unfortunately they are 

 both rare in Britain. If we drop the name morio altogether, as it 

 seems ({uite uncertain which of the two is Fabricius's species, then one 

 of Thomson's will have to take the name anthracinus, Smith, but at 

 the present moment Smith's type is not available for examintion, so I 

 must keep to the names given by Thomson. The two species may l>e 

 distinguished thus : — 



Clypealis, Thoms. 



Clypetis cmarginate, the eiiiargination bearing a distinc't tooth in the 

 centre in the ? ; a slight production only in the d ; ventral segments 3 to 5 in 

 the c? bearing strong fringes of very fine golden hairs ; frontal tubercle in the 

 '^ narrower and less developed than in carinatus. Thomson also points out 

 that in carinatus the apical ventral segment in the 9 is more strongly punc- 

 tiu'ed and carinated at the apex, )jut this chai'acter is hard to see and not very 

 well developed. 



Of this species I have females from Shuckard's Collection, and 

 Mr. Morice took several males at Downside, near Cobham, on 

 June 29th, 1900, and Mr. Nevinson has a (J from Bude, taken in 

 June, 1891. 



Carinatus, Thoms. 



Clypeal emargination simple in both sexes ; venti-al segments in the S iiot 

 densely fringed ; frontal tubercle more developed and thicker ; the females 

 which I have seen tend to be larger than in clypealis. 



I have two ^ and a ? from Shuckard's Collection, both sexes 

 from the late A. Beaumont, bred from an old stump in his garden, 

 and females from Bury St. Edmunds, taken l)y Mr. W. H. Tuck. 

 Mr. Morice also has it from Mr. Beaumont. Mr. Nevinson has taken 

 the J at Cobham and Oxshott, and has a ? specimen from Colchester. 



DiODONTUS FEIESEI, Kohl. 



This species is very closely allied to minutus, and like it has the mandibles 

 flavous, but/Viesi differs in the form of the metatarsi of the intei-mediate legs 

 of the cJ ; these inminutus are suddenly enlarged near the apex; in tliis species 

 the metatarsi are curved and slightly but gradually widened towards the apex 

 showing no sudden enlargement. Another character given by Kohl, and 

 noticeable in the specimens I have from Egypt taken by Mr. Morice, Avhich 



