BY ROWLAND E. TURNER. 107 



present species. The type of T. calcaratus appears to be lost, pro- 

 bably owing to Smith's extremely careless habits as to marking 

 type-specimens. 



17. T. (Zeleboria) volatilis Sm. 



Thynnus (Agriomyia) volatilis Sm., Cat. Hym. B.M. vii. p. 3 3, 

 n.85, 1859( ( J). 



(J. Clypeus narrowly produced and truncate anteriorly. Head 

 and thorax finely rugose; pronotum shining and finely rugulose; 

 scutellum with an obscure carina from base to apex. Median 

 segment slender, delicately transversely rugulose, almost smooth 

 at the base. Abdomen subpetiolate, elongate-fusiform, shining 

 and sparsely punctured. Hypopygium triangular, narrowly 

 truncate at the apex, with a small apical spine. Head and pro- 

 notum with long, thin, fulvous pubescence, longest on the sides 

 of the head. 



Hab. — Australia (Smith); Adelaide^). 



Nearest to T. cryptoides Sm., but differs much in sculpture and 

 in the shape of the hypopygium. 



18. T. (Zkleboria) leucostictus, n.sp. 



(J. Clypeus narrowly advanced in the middle and truncate at 

 the apex, closely and finely punctured, extreme apex smooth and 

 shining, with a delicate carina from base to centre. Antenna? 

 shorter than head and thorax combined. Head finely rugose, 

 interantennal carina not developed. Thorax finely punctured, 

 scutellum subtriangular, truncate at the apex. Median segment 

 very closely and minutely punctured; with grey pubescence, 

 thickest on the sides. Abdomen slender, elongate-fusiform, 

 shining and almost smooth. Hypopygium small and narrow, 

 subtriangular at the apex. Black; a spot on each side of the 

 vertex, tegulae and legs except coxae and trochanters ferruginous; 

 a spot on each side of second, third and fourth abdominal segments 

 creamy-white. Wings hyaline, nervures fuscous. Length 10 mm. 



Hab.— Yass, N. S.W. (Froggatt). Type in Coll. Froggatt. 



The antennae are shorter and stouter than in other species of 

 the group. 



