190 REVISION OF THE THYNNID^E OF AUSTRALIA, II., 



134. T. (LOPHOCHEILUS) FLAVIPENNIS Sm. 



Thynnus flavipennis Sm., Cat.Hym.B.M.vii.p. 21,n.39,1859( ( J). 



<£. Clypeus convex, truncate at apex and sparsely punctured. 

 Head and thorax closely and finely punctured, clothed above 

 with fulvous pubescence, which is rather dense on pro- and meso- 

 noturn, the pubescence beneath thin and grey. Median segment 

 shining, very finely rugulose, smooth at base. Abdomen elongate, 

 third and fourth segments a little the broadest, smooth and 

 shining, with a few scattered and minute punctures; segments 

 2-6 with an impressed transverse line near base. Epipygium 

 rounded at apex, with a few curved striae; hypopygium with 

 basal angles bluntly prominent, broad and rounded, broadly sub- 

 truncate at apex, with a very short apical spine. 



Q. Head convex, broader than long, strongly rounded at pos- 

 terior angles, rather strongly but not very closely punctured, 

 front between antennae rugose with a short and feeble longitu- 

 dinal sulcus. Thorax and median segment very finely punctured; 

 pronotum almost as large as head, subrectangular, about half as 

 broad again as long. Median segment obliquely truncate pos- 

 teriorly. Abdomen very sparsely punctured, second segment 

 with many (about fourteen) more or less irregular transverse 

 carinas, those near base very delicate, the two at apex rather 

 more elevated. Pygiclium not contracted, vertically truncate 

 posteriorly and longitudinally striated, surface of truncation 

 about twice as long as broad, sides parallel and produced into 

 spines near apex, extreme apex narrower and smooth. Ferru- 

 ginous-brown; truncation of median segment black. In some 

 specimens the abdominal segments are stained with black. 

 Length 11 mm. 



Hab.—New South Wales. 



The colour of the male is variable, some specimens being with- 

 out the reversed barb-shaped spot mentioned by Smith. The 

 abdominal segments are black at the base. 



