BY G. H. HARDY. 65 



Cyrtomorpha paganica, White. 

 Cyrtomorpha paganica, White, Proc. Roy. Soc. Tasm., 1916, 

 p. 186, fig. 30. 



Hab. — Tasmania, Bellerive, near Hobart. Three speci- 

 mens were collected on a coastal sand-dune on the 25th 

 January, 1918; they were hovering over and settling on bare 

 spaces amongst foliage, but owing to their small size they 

 were extremely difficult to see even when settled on the 

 bare patches. 



Note. — White described the species from a single speci- 

 men which he considered to be a male; one of the three speci- 

 mens examined has the male genitalia slightly exserted, and 

 this determines the sex; the eyes are uniformly separated in 

 all three specimens, and therefore probably all three speci- 

 mens are males. 



Genus Geron, Meigen. 



Geron, Meigen, System. Beschreib., ii., 1920, p. 223. 7c?., 



White, Proc. Roy. Soc. Tasm., 1916, p. 186. 



Geron australis, Macquart. 

 Geron australis, Macquart, Dipt. Exot., ii. (1), 1840, p. 118, 



PL xiii., fig. 2. 

 Geron dispar, Macquart, Dipt. Exot., suppl. 4, 1850, p. 122, 



PI. xi., fig 13. Id., White, Proc. Roy. Soc. Tasm., 



1916, p. 187. 

 Geron cothurnatus, Bigot, Ann. Soc. Ent. France (7), xli., 



1892, p. 374. 

 Geron hilaris, White, Proc. Roy. Soc. Tasm., 1916, p. 188, 



text fig. 31. 

 Synonymy. — Geron australis is described from Port 

 Jackson, and specimens from the locality and from New 

 South Wales generally show a wide range of variation in 

 size and characters, and there are no satisfactory characters 

 whereby they can be divided into more than one species. 

 Tasmanian specimens of Geron disjoar, Macquart, are of a 

 larger average size, but again show the same range of size, 

 and cannot be divided from those of New South Wales. 

 Specimens agreeing with the description of Geron hilaris. 

 White, are represented in the collection under revision from 

 New South Wales, but not from Tasmania, the type locality; 

 nevertheless, there can be little doubt but that G. hilaris. 

 White, does not represent a distinct species. Geron cothur- 

 natus. Bigot, was placed as a synonym of G. dispar, Mac- 

 quart, by White, and this is undoubtedly the correct position. 



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