226 
[March, 
observation. The galls are, in fact, identical in form and stmctiire, 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. 
Spatliegaster 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, (J .— ? ? with two lateral testa- 
ceous spots at the base of the abdomen ; wings less infumated than those 
of the S- ^°^g- ^^°- 
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 Cumberland of two species of Fossorial Eymenoptera (Pompilus 
melomcmus and Passaloeaus monilicornis) not previously recorded as British. 
POMPiLUS MELANAKius, Van d. Lmd ; Dahlbom, Hym. Em-op. 46, 25. 
Female— Black, smooth, but little shimng ; head and prothorax with long diverging 
black hairs ; clypeua 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 distmct longi- 
tudinal impression ; wings hyahne, slightly clouded at the apical margins ; second 
and third sub-marginal cells nearly equal in size, sub-quadrate ; trochanters 
and legs with a slight silveiy pile, intermediate and posterior tibia9 with a 
double row of spines, anterior tarsi slightly ciliated ; abdomen with a few long 
black haii-s 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. 
Passaloecus monilicornis, Dahlb., 1. c. 243, 144 ; Wesmael, Rev. Crit. Hym. Foss. 
de Belg., 122, S. 
