226 r [March, 



observation. The galls are, in fact, identical in form and structure, and 

 differ only in their situation. Gallimome Jlavipes, Walk., and Platyme- 

 sopus tibialis, Westw., are Chalcideous parasites of this species. It is 

 found throughout Europe, but seems to be rather local in England. 



SpatTiegaster tricolor, Hart. 



Black; mandibles, 2nd and 3rd joints of the antennae, squamulse, 

 two spots on the metathorax, and the petiole, rufous. Legs bright 

 yellow, apical joints of the tarsi fuscescent. Wings hyaline, obscurely 

 infumated towards the apex, the nervures suffused with black. Petiole 

 one-third the length of the abdomen, ,^ . — $ ? with two lateral testa- 

 ceous spots at the base of the abdomen ; wings less infumated than those 

 of the (J. Long. 1 lin. 



On the oak. I named this species from specimens sent to me for 

 identification, and, as they are no longer in my possession, I can only 

 translate Hartig's description in Germ. Zeits., 3, 341. 



{To he continued.) 



Occurrence in Civmherland of two species of Fossorial Hymenoptera (Pompilus 

 meloma/rius and Passaloecus monilicornis) not previously recorded as British. 

 Pompilus melanarius, Van d. Lind ; Dahlbom, Hym. Eui'op. 46, 25. 

 Female — Black, smooth, but little shining ; head and prothorax with long diverging 

 black hairs ; clypeus and mandibles with a fringe of rigid hairs ; antennaa 

 about as long as the head and thorax, stout ; an impressed line runs from the 

 anterior stemmata to the base of the clypeus ; the posterior margin of the pro- 

 thorax slightly elevated and angulated, the metathorax with a distinct longi- 

 tudinal impression; wings hyaHne, sUghtly clouded at the apical margins; second 

 and thii'd sub-marginal cells nearly equal in size, sub-quadrate ; trochanters 

 and legs with a slight silvery pile, intermediate and posterior tibis9 with a 

 double row of spines, anterior tarsi slightly ciliated ; abdomen with a few long 

 black hairs beneath, and on the apical segment ; the second and third segments 

 with a band of silvery pile at their hinder margins. 



Nearly allied to P. niger, but easily separated from that species by being less 

 glossy, by the long hairs on the head and prothorax, and by the larger and sub- 

 quadrate sub-marginal cells of the wings. 



Dahlbom's description (loc. cit.) is very unsatisfactory, and without Mr. F. 

 Smith's assistance I should not have ventured to refer my specimen to his insect. 

 This specimen, a female, was taken in the east of Cumberland, in July, some years 

 ago. Mr. Smith informs me of a second specimen, taken last year by Dr. Sharp, 

 near Dumfries. The male appears to be unknown. 



Passalcecus monilicounis, Dahlb., 1. c. 243, 144 ; Wesmael, Rev. Crit. Hym. Foss. 

 de Belg., 122, S. 



