34 AUSTRALIAN STRATIOMYIII>.E, 



Subfam. Beridin^e. 



Synonymy. — In the "Catalogus Dipterorum" Kertesz 

 places Xenomorpha as a synonym of the genus Cliiromyzu 

 and suggests that Inopus is also a synonym of the same. 

 The position of the Australian species placed under the 

 genus Xenomorpha is still uncertain, but they are allied 

 to the genus Chiromyza, and the genus Inopus agrees 

 better with the genus Metoponia, and indeed may be 

 synonymous with it. 



White, in 1916, placed Xenomorpha as a synonym of 

 the gem* Mcto /ion /a , but misstated that the wings of the 

 latter have four posterior veins. White's mistake caused 

 him to create the genus Gryptoberis for species with three 

 posterior veins, but the genotype is - a male of Macquart's 

 female type species of the genus Metojjonia. On this ac- 

 count, in the present paper, Gryptoberis is placed as a 

 synonym of the genus Metoponia, and the genus Xenomor- 

 pha is used for convenience for all species of Beridinas with- 

 out scutel lar spines and with four posterior veins present. 

 The material to hand is not sufficient to form a better 

 arrangement. 



Key to the Genera of the Beridinoz. 



1. The scutellum without spines. 2. 

 The scutellum with spines. 3. 



2. The wings with three posterior veins. Metoponia. 

 The wings with four posterior veins. Xenomorpha. 



3. The eyes bare. 4. 

 The eyes hairy. Actum. 



4. The antenna? elongate, three times as long as the head ; 



the wings without markings. Xanthoberis. 



The antenna- moderately lono- ; the wing's marked with 



fuscous. Neoe ta ireta . 



Genus Metoponia, Maequart. 



Metoponia, Maequart, Dipt. Exot., suppl. 2, 1847, p. 28. 

 Id., Walker, List Dipt, B.M., v. suppl. 1, 1854, p. 

 112. Id.. Osten-Sacken, Berl. Ent, Zeit., xxvii., 

 1883, p. 297. Id., White, Proc, Rov. Soc. Tasm., 

 1914. p. 46; and 1916, p. 260. 



Gryptoberis, White, P.L.S. N.S.W., xli., 1916, p. 73. 



Type. — Metoponia rubriceps, Maequart. 



New Holland. 



Gharacters. — The species in this genus have a very 

 receding face ; the eyes contiguous in the male and widely 

 separated in the female; the abdomen with seven visible 



