BY G. H. HARDY. 199 



ginal, first and second posterior, and the discal cells, and also one at the cubital 

 fork . 



S. The female is similar to the male; the ovipositor is very short and only 

 subcompressed ; it shows a ventral surface as linear, but the dorsal surface is 

 convex and tapers apically and in transverse section a "V" is formed by the two 

 sides. 



Length. — Male, 14 mm.; female, 18 mm. 



Hab. — New South Wales : Sydney ; holotype male and allotype female, 31st 

 March, 1918 ; one paratype male, 29th March, 1918. 



Type. — The holotype and paratype are in the Australian Museum. 



Neoitamus maegites Walker. (Text-fly:- 1-) 



Asilus margites, Walker, List Dipt. Brit. Mus., ii., 1849, p. 461; vii., suppl. 3, 



1855, p. 737; Ricardo, Ann. Mag. Nat. Hist., (8), xi., 1913, p. 448. 

 Nieoitamus caUginosus, White, Proc. Roy. Soe. Tas., 1913 (1914), p. 277; 1916, 

 p. 176; 1917, p. 93 (in key). 



Synonymy. — Walker's type is from Melbourne, and White's type is from 

 Tasmania. In the collection under revision there are specimens from Sydney 

 identified by White as his N. caliginosus; these agree with the Tasmanian speci- 

 mens, and also with Walker's description of A. margites. 



Description, d. The face has a large tubercle, and a moustache composed 

 of mostly white hairs. There is a row of black bristles behind the eyes. 



The dorsal thoracic bristles are disposed on each side of the median as fol- 

 lows: — two presutural; two superalar; one postalar; five dorsocentral. The num. 

 her of bristles appears to be constant, and normally they are black. There are 

 two scutellar bristles which are normally black, but often one or both are white. 

 The metapleural bristles are black and the hypopleural bristles are white and weak 

 or obsolete. 



The abdominal bristles are mostly black, small and not very conspicuous. 

 The upper forceps of the male genitalia are simple and without a process, but they 

 have a row of about ten long, slender, dorsal bristles which somewhat conceal the 

 median lamella. 



The legs have the anterior femora without spines; the intermediate femora 

 with the row on the anterior side usually reduced to two spines, a subapical 

 spine on the posterior side, and the ventral row of spines complete ; the posterior 

 femora with the system of spines complete. 



The wings have a normal venation ; the intermediate erossvein is situated aliout 

 the middle of the discal cell, and the second posterior cell is short. Sometimes 

 fuscous spots are present on the wing. 



?. The female is similar to the male and generally has a few black hairs 

 above the white in the moustache ; the ovipositor is short. 



Rab. — Tasmania and New South Wales. 



Note. — In the collection under revision there are twenty-five specimens; three 

 males and four females from Tasmania, and five males and thirteen females from 

 New South Wales. One female from Sydney and one from the Hawkesbury River 

 are labelled by White as his N. caliginosus. 



Neoitamus setosus, n.sp. (Text-figs. 14, 15.) 



Description, c?. The tubercle of the face is large, the moustache is mostly 

 white, and the hairs above and laterally are black. The front is black, covered 



