the Asilidse of Australasia. 354 



last have the third joint broad, lono^er than the first two 

 joints together. Wings with the first and fourth posterior 

 cells open, the anal cell closed. 



The species as yet recorded in this genus are : — 



Thereutria kictuosa, Macq., Dipt. Exot. i. (2) p. 155 [Dasypoffon'] 

 (1838). 



Thereutria amaracns, Walker, List Dipt. ii. p. 380 [Laphria'] (1849) et 

 vii. Suppl. 3, p. 559 [Lcqjhriii] (1855). — Ommatius ialmus, Walker, 

 I. c. p. 479 et p. 759. Dasypof/on diversicolor, Macq., Dipt. Exot. 

 Suppl. iv. p. 368 (1849) ; I3igot, Ann. Soc. Eut. France, (5) viii. 

 p. 219 (1878). Dasupoyon aurifacies, Macq., I. c. p. 367, pi. vi. 

 fig. 5, Thereutria calcar, Loew, Progr. Realschule Meseritz, 1851, 

 p. 20 (1851 ). Scandon compacta, Walker, Ins. Saund., Dipt. i. p. 108, 

 pi. iv. fig. 7 (1851), et List Dipt. vii. Suppl. 3, p. 563 (1855). 

 Laphria diversipes, Macq., Dipt. Exot. Suppl. v. p. 73 (1855) ; 

 Froggatt, Australian Insects, p. 295 (1907). Thereutria Caligula^ 

 Bigot, Ann, Soc. Ent. France, (5) viii. p. 233 (1878). Dasypogon 

 diversipes, Kirby, Ann. Mag. Nat. Hist. xiii. p. 468 (1884). 

 j, / y JDhereutria pulclira, Schiner, Reise Novara, p. 169 (1868). 



Thereutria luctuosa, Macquart. 



Type, a male, seen in Paris Museum, 12.4. 11, described 

 by Macquart as from unknown locality : a label below gives 

 " New Holland " ; no doubt this is correct, as the genus, at 

 any rate as yet, is peculiar to Australasia. It is a species 

 of Thereutria distinguished from T. amaracus and T. pulchra 

 by the wholly black legs and brown wings. A blue-black 

 species. Abdomen with white spots at sides of segments 

 2-6. Face with white lines on each side, flat, hardly raised 

 at oral opening. Moustache white. Antennce gone, except 

 the first two joints, which are black, with black pubescence. 

 Wings brownish, the fourth posterior cell narrowed at border, 

 the anal almost closed. 



Thereutria amaracus, Walker. 



Ommatius ialmus, Wlk. 

 Dasypogon diversicolor, Macq. 

 Dasypogon aurifacies, Macq. 

 Thereutria calcar, Loew. 

 Scandon compacta, Wlk. 

 Laphria diverdp)es, Macq. 

 Thereutria caligula, Bigot. 

 Dasypogon diversipes, Kirby. 



Type (cJ) from Hunter River, New S. Wales, and 

 other specimens from Burpengary, Queensland, and New S. 

 Wales. 



Two male specimens from New S, Wales (presented by 

 J. Hunter) were described by Walker as Ommatius ialmus; 

 in both the third joint of antennae is wanting and Walker 



