Hymenoptera aculeata collected in Algeria. 555 



POMPILUS VIATICUS, L. 



? 2. Biskra, 17. v. 93., 4. iv. 97. A.E.E. 

 ?. Le Tarf, 27. vi. 96. A. E. E. 

 $ 2. Biskra, 5 and 16. v. 98. F. D. M. 

 ?. Biskra, 24. iii. 98. F. D. M. 



POMPILUS, sp. (?). 



$ 1. Biskra, Dunes on the Route des Zibans, 22. iii. 

 94. A.E.E. 



POMPILUS CHALYBEATUS, Schiodte. 



£?. Biskra, 1. v. 97. A.E.E. 

 ?. Biskra, 29. iv. 97. A. E. E. 



POMPILUS MOKICEI, n. sp. 



Niger, orbitis in utroque sexu antice et postice striga pallida 

 signatis, pronoto angulatim emarginato, propodeo postice piloso, alis 

 infuscatis, cellulis submarginalibus tribus, tertia trapezoidali, tarsis 

 anticis breviter spinosis, abdomen segmentis basalibus tribus plus 

 minus runs, marginibus posticis infuscatis, valvula dorsali $ setis 

 nonnullis nigris vestita. £ segmento 5 t0 convexo, apice sube- 

 marginato, 6 t0 medio piano valde inciso. 8° compresso, minuto, 

 carinato, breviter pilosa. 



$ In form like most of the red-bodied species of the genus 

 belonging to Kohl's Section 1. Black with the orbits of the eyes 

 margined with a very narrow cream- white line, of variable length, in 

 front, and a rather more conspicuous one behind, near the vertex ; 

 abdomen with the first 3 segments red, more or less widely fuscous 

 posteriorly, head very shortly pilose, clypeus very convex, its anterior 

 margin entire • narrowly and slightly raised, mandibles red in the 

 centre, and clothed with a greyish pile ; antennae with the 3rd joint 

 about as long as the 2nd and 4th together, thorax in fresh examples 

 clothed with a somewhat inconspicuous brownish pile, pronotum 

 sharply angulated posteriorly, propodeum posteriorly and at the sides 

 with a few fine hairs ; wings dusky, their apices darker, 3 submarginal 

 cells, the 3rd subequal to the 2nd and trapezoidal ; anterior metatarsi 

 with 3 short piceous spines in the comb, which are scarcely more than 

 two-thirds as long as the 2nd tarsal joint. Abdomen with the apical 

 segment clothed with some rather stiff black hairs, but these not so 

 dense nor so bristly as in some species. 



<$ With similar orbital lines as the $ • The 3rd submarginal 

 cell in some examples almost triangular, 6th ventral segment flat, 



TRANS. ENT. SOC. LOND. 1901. — PART IV. (DEC.) 37 



