538 A REVISION OF THE CHIROMYZIS'I (dIPTEBA), 



the geiius Metoponia. The radial vein invariably issues from the first basal cell; 

 the upper branch of the cubital vein may be present or obsolete; the discal cell 

 may be open or closed and is short; three posterior veins issue from the discal 

 cell and often another, but stunted vein, the true third posterior vein, is also pre- 

 sent; the first and second posterior veins may issue from tlie discal cell separately, 

 or from a point, or they may be stalked; these characters are variable within a 

 species. The fifth posterior vein issues from the second basal cell and joins 

 the anal vein considerably before it reaches the wing margin. 



Chibomyia vittata Wiedemann . 



Chiromyia vittata, Wiedemann, Nova Dipt. Gen., 1820, p. 20, fig. 8, ?. (For 

 further references see Kertesz, Cat. Dipt., iii.. 1908, pp. 144-5.) 

 Note. — Schiner gives X. leptiformis Macquart as a synonym of this species. 



Chiromyza ochracea Wiedemann. 



Chiromyza ochracea, Wiedemann, loc. cit., p. 20, c?. (For further references see 

 Kertesz, loc. cit.) 



Chiromyza fuscana Wiedemann. 



CJiiromy^a fuscana, Wiedemann, Dipt. Exot., 1821. ji. 115, ?. (For further 

 references see Kertesz, loc. cit.) 



Chiromyza leptiformis Macquart. 



Xenomorpha leptiformis Macquart, Dipt. Exot., i., 1, 1838, p. 193, PI. xxiii., fig. 

 1 (?) ; and i., 2, 1839, p. 190 (d") ; Walker, List Dipt. Brit. Mus., v.. 

 suppl. 1, 1854, p. 66. 

 Note. — Schiner gives this as a synonym of C. vittata Wiedemann. 



Chiromyza australis Macquart. (Plate xxx., figs. 12-16.) 



Xenomorpha australis, Macquart, Dipt. Exot., suppl. 4, 1850, p. 54, PI. iii., fig. 

 7; Williston, Trans. Ent. Soc. Fbilad., xv., 1888, p. 244; Hardy, Proc. 

 Roy. Soc. Tas., 1920, p. 38, text-fig. 2. 



Characters. — This species has already been fully described, but it is subject 

 to considerable variation in wing venation and colour markings. The eyes are 

 separated in both sexes; the wings have a very complete venation, but the upper 

 branch of the cubital fork may be partly or completely absent; the third pos- 

 terior vein is almost invariably indicated by a stunted vein which is variable 

 in length, and in one specimen the cross-vein between the second and third pos- 

 terior veins is obsolete. The illustration is taken from one of the series of speci- 

 mens from Gisborne already described by nie. 



Macquart described the male as having rather thick posterior tarsi, which 

 character applies better to Ch. prisca, whilst the drawing shows the eyes separated 

 in the male, and a stunted third posterior vein which conforms to the species 

 idefatified here. 



//a6.— New South Wales and Victoria. (6 <i,8 9.) 



1 Chiromyza transequa Walker. 



Nonacris transequa. Walker, Ins. Saund. Dipt., 1852, p. 7. 



Chiromyza transequa, Osten-Sackcn. P>erl. Ent. Zeit., xxvi.. 1882. p. 368. 



