276 REVISION OP THE THyNXID.E OF AUSTRALIA, I., 



sion oil each side of the carina; the prothorax posteriorly much 

 elevated and somewhat narrowed, forming a subtubercular pro- 

 minence as high as the mesothorax. Median segment punctured, 

 short, much broadened and vertically truncate posteriorly. 

 Abdomen shining, finely punctured: epipygium broadly truncate 

 at the apex. Entirely ferruginous-brown. Length 7 mm. 

 Hah. — Adelaide, S.A.; Victoria. 



A. PALLIDULUS, n.sp. 



^. Clypeus narrowly produced to the apex, finely punctured, 

 with an indistinct carina from the base not quite reaching the 

 apex. Head strongly punctured, with a well developed median 

 froatal sulca. Prothorax very short and depressed: mesothorax 

 strongly punctured, the scutellum short and broadly truncate at 

 the apex. Median segment shining, sparsely punctured, the 

 punctures very minute and shallow. Abdomen flattened above 

 and beneath, smooth and shining, subpetiolate, the second seg- 

 ment depressed at the base. Hypopygium with a spine on each 

 side near the base, thence very suddenly narrowed and produced, 

 very slender, with parallel sides to the base of the apical aculeus, 

 which is rather long. Testaceous-brown, the clypeus, front, 

 marnns of the prothorax, and postscutellum testaceous-yellow: 

 the antennie, except the scape and two basal joints of the 

 flagellum, black. Length 9 mm. 



^. Unknown. 



Hah. — Cairns, Q. 



Genus T a c h y n o m y i a Guer. 



Tachynomyia Guer., Mag. de Zool. xii. 1842 (nee Ashmead). 



Aelurus Westw , (nee Klug) Arc. Ent. ii. 2, p. 122, 1844. 



Aelurus ^m., Cat. Hym. B.M. vii. .53, 1859. 



Pseudaelurus Ashm., Canad. Ent. xxxv. 



g. Head broad, the sides with a beard of long curled hair.s, 

 beneath strongly concave. The clypeus is moderately advanced, 

 more broadly than in Ariphron; the cheeks are produced into a 

 spine or tubercle at the base of the mandibles. The maxillae are 



