256 Mr. R. E. Turner on Foi^sorial Uymenoptera. 



Tachysphex depressiventris, sp. n. 



2 . Xigra ; mandibulis apice ferriigineis ; tarsia anticis spinis 

 albifiis ; alis hyalinis, vonis iiigris ; mesouoto scutelloque nitidis ; 

 abdomine depresso, nilido. 



Long. 9-1 U mm. 



? . Clypeus shining and sparsely punctured, convex, tlie 

 a|)ical margin strongly depressed, transverse. Front finely 

 and closely j)unctured, an oblique undulating carina on eacli 

 side from above tlie base of the antennae not quite reaching 

 the eyes. Second joint of the flagellum equal to the third, a 

 little more than twice as long as the first. The front is not 

 strongly convex, and the convex area o.i which the posterior 

 octlli are placed is less developed than is usual in the genus. 

 Ej'es separated on the vertex by a distance not quite equal to 

 twice the length of the second joint of the flagellum. Pro- 

 iiotum depressed much below tiie mesonotum, the middle a 

 little higher than the sides ; mesonotum and scutellnm 

 shining, microscopically punctured; pleurse opaque, minutely 

 punctured. Median segment broader than long, a little 

 narrowed to the apex, opaque, shagreened, with a distinct 

 impressed line from the base to the apex, tlie surface of the 

 apical truncation very finely transversely striated. Abdomen 

 strongly depressed, the dorsal surface flat, shining, with a 

 broadly interrupted apical band of white pubescence on 

 segments 1— o ; pygidial area lanceolate, very narrow, shining, 

 with a iew small punctures. Second abscissa of the radius 

 distinctly longer than the third; the flrst recurrent nervure 

 nearer to the first transverse cubital nervure than to the 

 second recurrent nervure. Comb of the fore tarsus well 

 developed, the spines whitish, tinged with ferruginous. 



IJab. Yallingnp, S.W. Australia, January; Muadaring 

 Weir, S.W. Australia, March 18, 1914 {Turner). 



This species may be distinguished by the strongly flattened 

 abdomen. 



Tachysphex persistans, sp, n. 



2 . Nigra, nitida, segmento mediano opaco ; segmentis dorsalibus- 



1-3 macula transversa laterali albo-pilosa ; alis fuscis. 

 Long. 18 mm. 



? . Clypeus shining, sparsely punctured, transverse at the 

 apex ; labrum bilobed. Front finely and closely punctured, 

 not convex, depressed and convex round the base of liie 



