an 
88 Rey. F. D. Morice on 
reasons were—(1) That, on comparing its structure and 
sculpture in detail with those of a typical capito 2 from 8. 
France, I could find no substantial difference except that 
the latter had certainly a larger head,—and the difference 
in this respect is not greater than that between two ? 
specimens from Egypt (determined for me by Herr Kohl) 
of the closely-allied species prisca, Schlett. Their punc- 
turation seemed to me quite similar; and they agreed 
also as to the characters of clypeus, mandibles, petiole, 
cordiform and pygidial areas, ventral segments, meso- 
pleural (tooth-like) tuberculations, ete., ete. (2) That 
g g of capito occurred in some numbers (and not accom- 
panied by their normal @ 2!) on the same flowers of 
Ammi with my hartliehi 2 2; but neither then nor after- 
wards could I find any ¢ ¢ of similar (black) coloration, 
though I naturally tried hard to do so, for I knew, of 
course, that an entirely black Cerceris must be something 
out of the common and probably undescribed. 
I feel, however, that it may be rash to unite forms super- 
ficially so distinct, without more conclusive evidence than 
the above, and therefore follow Dr. Schulz in treating 
hartliebi as a good species. 
AO 9+ Biskra, 19.y to.22..v1, 98... EF. DM. 
CERCERIS NASUTA, Lep. 
9¢3,22 9. Biskra, on Ammi visnaga, 19. v to 22. vi, 
Oi. Ae HG: 
1 ¢, 19. Biskra, on Ammz visnaga, 24. v, 93. A. E. E. 
1a Ao 2S Biskrasveane vi, 98; ) tae 
CERCERIS BUCCULATA, Costa 
From Costa’s figures I feel satisfied that this must be 
his species, though I have seen no other specimens of it. 
The clypeus is exactly as he represents it, very like that 
of ferrert (= propinqua, Cost.), but much broader than 
long. These Algerian examples, however, seem to have 
more yellow on the abdomen than Costa’s type; segments 
1, 2, 4 and 5 having very broad fasciae, which are scarcely 
at all emarginate basally. 
2° 9. Biskra, on Tamarix, 19. and 30. v, 97. A. E. E. 
CERCERIS ARENARIA, L. 
24.9. Médéa, on Eryngium triquetrum, 29. vi, 93. 
A. E. E. . 
