Hymenoptera aculeata collected in Algeria: the Sphegidae. 83 
be local races of a single widely-distributed species, which 
extends from Algeria to North China. I may add that 
the few specimens which I have seen determined by 
competent authorities as “ caspica, Morawitz,” are all less 
highly coloured than my own of opu/enta, and apparently 
also than the form which Morawitz origimally described. 
(None of them, ¢.g., have the cordiform area yellow!) 
2 gf gf and 1 &. Biskra, on Ammi visnaga, 17. v. 97. 
A. E. E. 
1 g. Biskra, on Ammz visnaga, 19. v, 97. A. E. E. 
2 oO. Biskra, 26, v, and 6: vi, 98.7 F Di M. 
1 9. (Label giving date and locality is lost; but no 
doubt it was taken at Biskra in v or vi, 98.) F. D. M. 
On 20. v, 98 I took a single $ in many ways much 
resembling the above, but with vertex, scutellum and 
“cordiform area” black, tempora with only a small yellow 
spot behind each eye, collar only yellow at the sides, and 
puncturation of abdomen coarser and more rugose. (This 
perhaps may be a specimen of dacica, var. magnifica, 
Schlett.) 
CERCERIS LUNATA, Costa 
422,399. Biskra, on Ammi visnaga, 18. and 25. v, 93. 
E. E. 
229. Hippdne, on Ammi visnaga, 12. viii, 96. A. EH. EK, 
13,329. Médéa, on Hryngium triquetrum, 26. vi, and 
Peri, 93. 
3 9 2. Biskra, 24.—27. v, and 11. vi, 98. F. D. M. 
CERCERIS PALLIDULA, Morice 
The single specimen taken perfectly agrees with my 
“type” from Egypt. 
2 Biskra, Vos vic 98. FD. M. 
CERCERIS PRUINOSA, Morice 
I described this species (perhaps rather rashly) in 1897 
from a single ? taken near Cairo, and am glad to find 
my ideas as to its distinguishing characters confirmed by 
further captures of what is evidently the same insect at 
Biskra in both sexes. In all, Mr. Eaton and myself have 
taken there 3 ¢ f and 4 2 9, the 2 ¢ corresponding in 
all respects with my Egyptian “type,” and the f ¢ 
strongly resembling them both in colour and structure— 
G2 
