BY ROWLAND E. TURNER. 237 



with an acute spine on each side near base, thence sharply nar- 

 rowed and produced with parallel sides to base of the long apical 

 spine, transversely striated above. Opaque black; mandibles, 

 except at apex, clypeus, margin of interantennal prominence, 

 margins of eyes interrupted on vertex, tegulae and anterior coxae 

 yellow. Legs fuscous, anterior legs ferruginous. Pubescence on 

 head and disc of thorax short and fulvous, elsewhere grey; a band 

 of grey pubescence on apical margin of abdominal segments. 

 Wings fusco-hyaline, nervures black, stigma fuscous. Length 

 17 mm. 



#a&.— Fremantle, W. A. (Walker). Type in Brit. Mus. 



193. T. atrox, n.sp. 



£. Clypeus very prominent at base, then vertical to apex, 

 where it is very broadly truncated, coarsely longitudinally 

 striated. Antennae rather longer than thorax and median seg- 

 ment combined. Head and thorax very finely and closely punc- 

 tured, with thin cinereous pubescence. Median segment short, 

 obliquely truncate from a little behind postscutellum, clothed 

 with long grey pubescence. Abdomen short, very closely and 

 shallowly punctured, first segment not as broad as second, trun- 

 cate at base, with a median sulcus on the truncation; a deep 

 groove between first and second ventral segments, second segment 

 with a tubercle at base. All the segments above with a band of 

 grey pubescence on apical margin. A spine at apical angles of 

 sixth ventral segment. Dorsal plate of epipygium produced, 

 longitudinally striated, narrowly truncate at apex. Hypopygium 

 prominent at basal angles, thence broad and gradually narrowed 

 to apex where it is broadly rounded, without an apical spine. 

 Entirely black; legs fusco-ferruginous. Wings hyaline faintly 

 tinged with fuscous, nervures black. Length 21 mm. 



Hab. — Fremantle, W.A. Type in Oxford University Museum. 



Allied to T. walkeri, but the clypeus and hypopygium are very 

 different. 



