BY ROWLAND E. TURNER. 205 



recurved. Second segment with about nine transverse carinae, 

 including the recurved apical margin, those near base irregular 

 and less prominent. The remaining segments smooth above. 

 Abdomen beneath strongly punctured, with long thin pubescence; 

 fifth segment coarsely longitudinally striated, emarginate. Pygi- 

 dium compressed, truncate posteriorly, strongly narrowed just 

 before truncation and transversely rugulose, smooth at base, 

 surface of truncation elongate-oval, smooth. Black; depressions 

 above antennae, sides of prothorax anteriorly, a line at base of 

 mesonotum interrupted in middle, a spot on each side of second 

 and fifth abdominal segments, a broad band near apex of third 

 and fourth; anterior portion of head beneath, prosternum and 

 mesosternum, first abdominal segment in middle, a deeply 

 emarginate band on second, a large spot on each side of third 

 and fourth, coxae beneath, a spot at base of trochanters and an 

 obscure line at base of tibiae yellow. Mandibles, except apex, 

 tibiae and tarsi fusco-ferruginous. Length 20 mm. 



Ilab. — Champion Bay, W.A.(Smith); Narrabri, N.S.W.(Frog- 

 gatt); Mackay, Q. (Turner; $Q in cop.). 



152. T. OCHROCEPHALUS Sm. 



Thynnus ochrocephalus Sm., Trans. Ent. Soc. London, 1868, 

 231(5). 



This is very near T. brenchleyi. It differs in the colour on the 

 head and pronotum being ochraceous instead of yellow, also in the 

 want of colour beneath. The clypeus is much more strongly 

 longitudinally striated and less produced at the apical angles; 

 there is a carina in the middle of the interantennal prominence. 

 The scutellum is broadly subtruncate at the apex, not produced 

 over the postscutellum, which reaches but does not project beyond 

 the truncation of the median segment. The first abdominal seg- 

 ment beneath is obliquely, triangularly truncated at the apex, 

 with a groove separating it from the second segment. The hypo- 

 pygium is broader and shorter than in T. brenchleyi, and the 



