Hymenoptera aculeata collected in Algeria. 551 



joints subequal in length, ocelli arranged as in the $ but the space 

 between them and the eyes longer than the space between the posterior 

 pair ; pronotum rather more sharply emarginate than in the $ ; 

 wings as in the $ ; propodeum clothed with long hairs, metatarsi 

 of all the legs very long, as long or longer than the 3 following 

 joints taken together ; abdomen rather short and wide for that of a 

 <£, basal segment with a few long hairs at the base above and 

 beneath, 5th ventral segment arcuately emarginate at the apex, 

 6th strongly and acutely excised in the centre, and with a small 

 round fovea on each side near the base of the excision, 8th wide, 

 with a strong central carina. 

 Long. 12 m.m. 



<f 1,? 1. Biskra, border of sand-hills between Hamman- 

 es-Salahin and a small reed-fringed pond about a 

 mile W.S.W. from the Hamman, visiting larval 

 Capsidse (?) or some sort of Homoptera on Thymelnea 

 microphylla. A. E. E. 



J 2. Biskra. F. D. M. 



POMPILUS, Sp. (?). 



A single $ apparently closely allied to notorms, 

 Tourn., Bone, 28. viii. 96. A. E. E. 



POMPILUS DUBITABILIS, n. Sp. 



Niger, opacus, P. teterrimo, Grib., cui forma et colore similis 

 metatarsorum anticorum spinis 4, brevioribus, capite et thorace 

 minus hirtis, nee non genis inter oculos et mandibulas multo brevio- 

 ribus satis distinctus — ab intacto Tourn. differt cellula cubitali 

 tertio sub-trapezoidali, propodeique lateribus haud longitudinaliter 

 rugosis. 



Black, dull clothed with a fine pubescence which gives a brownish 

 tint in certain lights. Apex of the clypeus slightly emarginate and 

 narrowly raised, smooth and somewhat shining cheeks between the 

 eyes, and mandibles very short. Antennae with the 4th joint about 

 three-quarters as long as the 3rd, 2nd and 3rd together nearly equal 

 to the distance between the eyes on the vertex ; posterior ocelli 

 distant from each other, as each is from the eye; face and vertex 

 rather sparingly clothed with somewhat short black hairs, cheeks 

 posteriorly more densely so. Thorax almost glabrous above, prono- 

 tum rather obtusely angled posteriorly, sternum hairy, wings very 

 dark with purple reflections, lateral nerves of 3rd submarginal 

 convex, nearly uniting above, posterior nerve of hind wing meeting 



