1010.] FOSSORIAL WASPS OF AUSTRALIA. 221 



steeply sloped posteriorly, with a median sulcus, the apex and the 

 posterior slope transversely striated. Abdomen subpetiolate, 

 fusiform, pruinose, with a transverse groove on the second ventral 

 segment. Posterior tibia? with a ridge above, spinose, not serrate ; 

 tarsal ungues with a tooth, not bifid ; anterior tarsi without a 

 comb ; the tarsi long. Second abscissa of the radius almost equal 

 to the third ; radial cell rather blunt at apex, not truncate or 

 rounded, first recurrent nervure received just before the middle 

 of the second cubital cell, second at the middle of the third cubit.d 

 cell ; submedian cell longer than the median : cubitus of the hind 

 wing interstitial with the transverse median nervure. 



Black ; antennae, legs, pleura?, thorax, and median segment 

 above ferruginous red ; extreme apex of the clypeus and base of 

 the mandibles fusco-ferruginous. Wings hyaline, crossed by two 

 broad fuscous bands, one on the basal nervure, the other from the 

 radial cell ; nervures black. 



Length 12 mm. 



S . As in the female, but the legs are black excepting the 

 anterior tibia? and tarsi, and the median segment is not striated. 



Hab. Mackay and Kuranda, Q. {Turner). December to May. 



This belongs to a rather distinct group, being without serrations 

 on the hind tibia?. It is found occasionally running on the stem 

 of Eucalyptus in proximity to the Reduviid bug Entomocoris 

 decor atus Stal, which it closely resembles when the wings are 

 closed . 



Calopompilus tenulus, sp. n. 



$ . Clypeus about three times as broad as long, slightly convex, 

 the anterior margin almost transverse. Eyes reaching to the base 

 of the mandibles, converging towards the vertex, where they are 

 separated by a distance equal to the length of the second and two- 

 thirds of the third joint of the flagellum ; posterior ocelli a 

 little further from the eyes than from each other. Pronotum 

 short, the posterior margin strongly angled in the middle ; median 

 segment convex, as long as broad, not truncate posteriorly, with 

 a shallow median sulcus not reaching the apex. Abdomen slender, 

 fusiform, subpetiolate ; the second ventral segment with a trans- 

 verse groove. Posterior tibia? strongly spinose, with a ridge ; 

 anterior tarsi without a comb ; tarsal ungues with one tooth. 

 Second abscissa of the radius nearly half as long again as the 

 third ; first recurrent nervure received at the middle of the second 

 cubital cell, second at one-third from the base of the third ; sub- 

 median cell longer than the median ; cubitus of the hind wing 

 interstitial with the transverse median nervure. Opaque, 'the 

 abdomen slightly shining. 



Black ; joints 2-6 of the flagellum orange-yellow ; anterior 

 tibia? pale testaceous brown. Wings hyaline, crossed by two pale 

 fuscous bands, one on the basal nervure, the other from the radial 

 cell, the apex also pale fuscous. 



Length 9-10 mm. 

 Proo. Zool. Soc— 1910, No. XXL 21 



