290 REVISION OF GENERA BELONGING TO DIPTERA BRACHYCERA OF AUSTRALIA^ 



Genus Bathypogon Loew. 



Type, B. asiUformis Loew {= aoris Walker). Australia. 



Characters. — The antennae have the fourth joint absent; the first joint is 

 longer than the second. The anterior tibiae are without a spur. The wings 

 have the fourth posterior cell closed considerably before the wing margin. 



Notes. — Seven supposedly distinct species are recorded under this genus 

 and the species so far examined cannot be adequately identified by the published 

 descriptions which are based chiefly upon minor colour characters. 



Genus D e r o Jl Y i a Phillipi. 



Type, D. gracilis Phillipi. Chile. 



Characters. — The antennae are witliout the fourth joint. The anterior tibiae 

 contain an apical spur. Tlie wings have the fourth posterior cell closed consider- 

 ably Ix'fore the wing margin. 



Genus Erythropogon White. 



Type, E. ichneunnjniformis White (^ maculineeris Macijuart). Tasmania. 



Characters. — The antennae have the fourth joint apparently present hut, owing 

 to the short bristly vestiture with which tlie apex is covered, the division between 

 the third and fourth joints is not distinct. The anterior tibiae contain an apical > 

 spur. The wings have the fourth posteiior cell open. The abdomen is cluh- 

 shaped. 



Erythropogon maculinkvri.s Mac(|uart. 



Dasypogon macuUnevris, Macquart, Dipt. Exot., suppl. 4, 1850, p. 65, PI. 

 vi., fig. 8. — Brachyrrhopala macuUnevris, Roder, Wien. Ent. Zeit., ii., 1883, p. 

 273.— B. maculinervis, Roder, Stett. Ent. Zeit., liii., 1892, p. 2i2.~Erythropogun 

 ichneumoniformis, White, Proc. Roy. Soc. Tasm., 1013, p. 270; /(/., 1910, p. 159, 

 text-fig. 26. 



Synonymy. — Miss Rieardo placed Dasypogon macuUnevris Macquart as a 

 synonym of Brachyrrhopala limbipennis Macquart, notwithstanding the fact that 

 Roder had already published a revised description of the species for which he 

 claimed very distinct characters. 



Roder's description conforms very well witli White's species and, luoieover, 

 Macquart's description and figure agree with this species better tlian with B. 

 limbipennis. 



//ob.— Tasmania : Hobart, 28tli March, 1915; Mt. Maria. 7th February. 1918. 



Genus Saropogon Loew. (Text-fig. 6). 



Type, Dasypogon luctuosus Meigen. Europe. 



Characters. — The antennae have the fourth joint present. The anterior 

 tibiae contain an apical spur. The wings have the fourth posterior cell open. 



Note. — Under the species Saropogon sergiits Walker, Miss Rieardo .states 

 that "Prom the description of Dasypogon niil^lus Macquart, from Tasmania, it 

 is pos.sibly the same species as this" and yet in the same work she had previously 

 placed this species under the genus Brachyrrhopala. 



This discrepancy has been allowed to stand unchallenged in all subsequent 

 references and Dasypogon nitidus Macquart has remained in the genus Brachyr- 

 rhopala where it does not belong. 



