256 Mr. R. E. Turner on Fossorial Hymenoptera. 



Tachysphex depressiventris, sp. n. 



$ . Nigra ; mandibulis apice ferrugineis ; tarsis anticis spiiiis 

 albidis ; alls hyalinis, venis iiigris ; mesonoto scutelloque nitidis ; 

 abdomine depresso, iiitido. 



Long. 9-10 mm. 



? . Clypeus sliining and sparsely punctured, convex, the 

 apical margin strongly depressed, transverse. Front finely 

 and closely punctured, an oblique undulating carina on each 

 side from above the base o£ 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 

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

 ocelli are p'aced is less developed than is usual in the genus. 

 Eyes separated on the vertex by a distance not quite equal to 

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

 notum depressed much below the mesonotuni, the middle a 

 little higlier than the sides ; mesonotum and scutellum 

 shining, microscopically punctured; pleuiaj opaque, minutely 

 punctured. Median segment broader tlian long, a little 

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

 impressed line from the base to the apex, tiie 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 l-o ; pygidial area lanceolate, very narrow, shining, 

 with a few small punctures. iSecond abscissa of the radius 

 distinctly longer than the third ; the first recurrent nervure 

 nearer to the first transverse cubital nervure than to the 

 second recmrent nervure. Comb of the fore tarsus well 

 developed, the S[)ines whitish, tinged with ferruginous. 



Hah. Yallingnp, S.W. Australia, January; Muudaring 

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



Tliis species may be distinguished by the strongly flattened 

 abdomen. 



Tachysphex persistans, sp. n. 



5 . Nigra, nitida, segment© mediano opaco ; segmentis dorsalibus 



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

 Long. 18 mm. 



? . Clypeus shining, sparsely punctured, transverse at the 

 apex; labrum bilobed. Front tinely and closely punctured, 

 not convex^ depressed and convex round the base of ilie 



