BY ROWLAND K. TURNER. 223 



Clypeus sparsely punctured ; head and thorax rugulose, 

 clothed with dense cinereous pubescence ; median segment 

 abruptly truncate from just behind postscutellum, covered with 

 long white pubescence. Abdomen subcorneal, closely and 

 shallowly punctured ; first segment almost vertically truncate 

 anteriorly, with a longitudinal carina beneath from base to apex, 

 where there is a very small vertical triangular truncation. 

 Apical segment coarsely punctured, broadly truncate at apex. 

 Hypopygium with a prominent spine on each side at base, thence 

 more or less gradually narrowed, and produced to base of apical 

 spine; transversely striated above. 



Hab. — Adelaide, S.A.; Western Australia (Smith). 



The differences between T. varipes and T. vespoides are confined 

 to the colour on the fifth abdominal segment. In T. indistinctus 

 the colour is more obscure, but there does not appear to be any 

 other distinction. Smith merely examined the specimens super- 

 ficially, and attached far too much importance to colour. 



176. T. flavopictus Sm. 



Thynnus flavopictus Sm., Cat. Hym. B.M. vii. 21, 1859(,^) 



(J. Clypeus irregularly longitudinally striated, broadly truncate 

 at apex, the apical angles not produced, pointed at base and con- 

 nected by a narrow carina with the interantennal prominence, 

 which is emarginate at apex. Head very finely rugulose, with 

 thin fulvous pubescence; thorax finely and closely punctured, 

 scutellum broadly subtruncate at apex. Median segment 

 obliquely truncate from postscutellum, with a short, longitudinal 

 sulcus on each side near apex, minutely punctured. Abdomen 

 elongate, closely punctured above and beneath, first segment 

 oblique at base and narrowed, with a median sulcus not reaching 

 apex, third and fourth segments very slightly broader than the 

 others, apical segment longitudinally striated at apex and rounded, 

 dorsal plate normal, not produced from the base or flattened; first 

 segment beneath with a broad, oblique,triangular truncation at apex 

 and a groove between first and second segments. Sixth segment 



