Hymenoptera aculeata collected in Algeria: the Sphegidae. 115 
Vertex fere planus (certe haud tumidus !). Ocelli utriusque postici 
distantia et ab ocello antico et ab oculo fere eadem (scilicet diametri 
sui longitudini subaequalis!), Antennae ¢ normales, articulis 
omnibus longioribus quam latioribus, forma fere simplici. 
Long. 35-5 mm. 
1 gf. Biskra, “Eyes sap green,” 30. iv, 94. <A. E, E. 
12.1 9, Biskra, 9. iv,97. A. EE. 
KOHLIA COXALIS, Morice 
3 ¢ 2. Biskra, on Amz visnaga, “ Eyes glaucous or sea- 
green, 24. and 5£.v, 97. A. E. E. 
3 2 4. Biskra, 31. v and 6. and 9. vi, 98. EF. D. M. 
24 2. Biskra,.o, and 9. yi; 98. B.D. M. 
STIZUS TRIDENS, F. var. ? 
The 2 have the clypeus and labrum more or less 
largely marked with yellow, whereas Handlirsch says of 
tridens , “Facies semper omnino nigra.” Notwithstanding, 
I believe these insects belong to that species. Saunders 
in his MS. list refers them doubtfully to cyanescens, Rad. 
But with the latter as described by Handlirsch they agree 
neither in puncturation nor pilosity. Apart from the 
yellow ? clypeus, ete., they seem to me absolutely normal 
tridens; and I may say that I have a 2 from Palestine, 
determined by Herr Kohl as ¢ridens, in which though the 
labrum is black, and the clypeus mostly so, there is a 
small patch of yellow on the latter (towards the apex of 
its longitudinal diameter). 
I do not know whether the ordinary form of tridens & 
has been recorded from Algeria. There is none such 
among Mr. Eaton’s captures, and I did not find the species 
there at all. 
2 ff. Bone, on Luphorbia paralias, “eyes dark greenish,” 
Bevin, OF. A. Hy B. 
2 f f. Bone, “ visiting Homopterous blight on Jamar,” 
9. vill, 97. A. E. E. 
5 29. Bone, on sandy ground, 6.viii, 96, 2. ix, 96, 26. vii, 
oy. A. K, E. 
1 2. Médéa, on Lryngium triquetrum, 10. vii, 93. A. E. EH. 
5 22. Le Tarf, on Foeniculwm vulgare, 24, and 27. vii. 
po. A. EL E. : ; 
299. La Calle, burrowing in sand “near the water’s 
edge,” 4. and 15. vii, 96. A. E. E. 
1 9. Biskra, visiting Tamaria, 21. iv, 97. <A. E. E. 
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