490 MB- R- E- TURNER ON [May 12, 



middle, with a little short grey pubescence on the sides. Pygidial 

 area shining and sparsely punctured, narrow and almost ponited 

 at the apex. The comb on the anterior tarsi is not very strongly 

 developed. The second cubital cell is very short on the radial 

 nervure, only half as long as the third ; the first recurrent ner- 

 vure is received at the same distance from the base of the cell as from 

 the second recurrent nervure, which is received close to the middle 

 of the cell. The third cubital cell is not much prolonged on the 

 cubital nervure, reaching only abovit two-fifths of the way from 

 the apex of the second cell to the margin of the wing. The 

 second and third transverse cubital nervures are scarcely curved. 



Black ; the apical half of the flagellum and the apical joint of 

 the tarsi fuscous; the tegulee testaceous. Wings hyaline, 

 nervures ferruginous. 



Length 6 mm. 



Hob. Port Darwin {Tamer) ; December. 



Tachysphex deeilis, sp. n. 



$ . Mandibles strongly incised on the outer margin ; clypeus 

 short and broad, strongly transversely depressed on the apical 

 margin and feebly emarginate in the middle, opaque at the base, 

 shining at the apex, and sparsely punctured. Front round the 

 base of the antennte clothed with very short silvery pubescence, 

 with a shallow longitudinal sulcus reaching very obscurely to the 

 anterior ocellus. Head opaque, the front slightly convex ; the 

 posterior ocelli subovate, situated on an elevation, with a small 

 and rather deep rounded depression behind them. Antennae 

 inserted much nearer to each other than to the eyes ; the second 

 joint of the flagellum a little shorter than the third, the third 

 and fourth equal in length, the fifth equal to the second. Eyes 

 strongly convergent, separated on the vertex by a distance equal 

 to the length of the fii^st two joints of the flagellum combined. 

 Pronotum scarcely more than half as broad as the head, depressed 

 below the level of the meson otum, which is opaque and micro- 

 scopically punctured ; the scutellum shining, very minutely 

 punctured. Median segment very opaque, finely shagreened, 

 nearly twice as broad at the base as long, almost vertically 

 truncate posteriorly ; the face of the truncation indistinctly 

 transversely striated, with a median sulcus. Abdomen shining, 

 minutely punctured, the apical margin of the segments with 

 broadly interrupted bands of obscure silver pubescence ; the 

 apical segment pointed, shining, and very sparsely punctured. 

 The tibife are very feebly spined, the anterior tibiae smooth ; the 

 tarsi more feebly spined than is usual in the genus, the comb of 

 the anterior tarsi only moderately developed. 



Black, the tegulee fuscous. Wings hyaline, nervures fuscous. 



The third cubital cell is narrow and strongly extended along 

 the cubital nervure towards the margin of the wing. 



Length 7 mm. 



Hab. Cairns, Queensland (Turner) ; February. 



