267 



NOTES ON TASMANIAN DIPTERA AND 

 DESCRIPTIONS OF NEW SPECIES, ETC. 



By G. H. Hardy. 



(Read 12rli June, 1916. Issued separately 23rd Dec, 1916.) 



CYRTIDvE. 



Oncodes flavescens, White. 



O. flavesceii.^, White. P. and P. Roy.* Soc. Tas., 1914, 



pg. 70. 

 O. nigriiiervis, White, id. pg. 71. 



0. (iter, White, id. pg. 72. 



The three specimens of Oncodes, described b}^ Mr. White, 

 are undoubtedly variations of the same species. I have 

 a long aeries of Oncodes showing several variations and 

 sizes graduating between the three descriptions, and from 

 observations made at Launceston, where they were abun- 

 dant, I have no hesitation in stating that flavescens is the 

 male, and the other two are females. 



Mr. White informs me that specimens of nigrinervis have 

 been taken in Victoria and New South Wales, whilst ater 

 is only known from Tasmania. I revised my series giving 

 this consideration, but can find no real distinction on 

 examining my series as a whole. The following table gives 

 the localities of Oncodes in my collection, and 'he number 

 of specimens taken : — 



X.W. C apt. Launceston. East Coast. Others. Total 



Flavescetns 2 ... 6 



Nigrinervis 3 ... 12 



Ater 6 ... — 



Pygmaeus 2 



Totals 13 ... 18 



The two N.W. Coast (Wynyard) 

 the male of var. ater (the apical ye 



obsolete), to which form, the three nigrinervis from the 

 same district closely approximate. 



All the Launceston specimens are typical, both male 

 and female, but the East Coast specimens (Triabunna and 

 Maria Island) show marked variation, so much so, that I 

 have difiiculty in isolating the tme ater from nigrinervis. 



11 ... 1 20 



.. 23 ... 1 39 



O ... «^ 



2 



.. 37 ... 2 70 

 flavescens could well be 

 low margins are partly 



