42 AUSTRALIAN STRATI0MYII1XE, 



Genus Neoexaireta, Osten-Sacken. 



Diphysa, Macquart, Dipt. Exot. i. 1, 1838, p. 172 (pre- 

 occupied). Id., Walker, List Dipt. B.M., v. suppl. 



1, p. 6. 



Exaireta, Schiner, Verh. z.-b. Ges. Wien, xvii., 1867, p. 



309 (preoccupied). 

 Neoexaireta, Osten-Sacken, Cat. Dipt. N. America, Edit. 



2, 1878, p. 44. Id., Enderlein, Zool. Anzeiger, xlii., 

 1913, p. 552. figs. 17-19. Id., White, Proc. Roy. 

 Soc. Tasm. 1914. p. 48. Id., White, P.L.S. N.S.W., 

 xli., 1916, p, 78. 



Neoexaereta, Kertesz, Cat. Dipt., iii., 1908, p. 131. 



Type. — Xylophagus spiniger, Wiedemann, 



Port Jackson. 



Emena Iments. — Enderlein described this genus, after 

 Macquart's figures, as having the radial vein (his r2-3) 

 branching from the cubital (his r main stem) beyond the 

 median cross vein, but Australian specimens have the 

 radial vein branching interstatia.1 with the median cross 

 vein. Macquart's figures, and hence Enderlein 's, show 

 the scutellar spines to be conspicuously curved instead of 

 straight or slightly curved and the antennae differ consider- 

 ably. 



Characters. — The eyes are bare and separated in both 

 soxes ; the antennae are moderately long, the third joint 

 consisting of eight segments ; the scutellum contains four 

 soines ; the abdomen consists of seven visible segments; 

 the wings contain four posterior veins, the third of which 

 does not i - each the wing margin, and they all branch from 

 the discoidal cell ; also the wings are much marked with 

 fuscous. 



Neoexaireta spinigera, Wiedemann. 

 Text fig. 4. 

 Xylophagus spiniger, Wiedemann, Auss. Zweifl. ii., 1830, 



p. 618. 

 Diphysa spiniger. Macquart, Dipt. Exot. i. 1, 1830, p. 172. 



1,1., Walker, List. Dipt. B.M., iv., 1849, p, 1152. 

 Beris spinigera, Loew, Stett. Ent. Zeit., vii., 1846, p. 306. 

 Sargus spinigera. Kirby, Ann. Mag. Nat. Hist. (5) xiii., 



1884, "p. 457. 

 Neoexaireta spinigera, Froggatt, Australian Insects, 1907, 



p. 293. Id., White, Proc. Roy. Soc. Tasm., 1914, 



p. 48. Id., White, P.L.S. N.S.W., xli., 1916, p. 



78. Id., Hardy, Proc. Roy. Soc. Tasm., 1917, p. 



63. 



