Tabanidse of the Australian Region. 285 



Tabanus nigrimanus , Walker, List Dipt. i. p. 183 (1848). 

 Tabanus badius, Summers, Aud. & Mag. Mat. Hist. (8) x. p. 225 (1912). 



Type (female) from Port Essington, Northern Territories, 

 S. Australia {Macgillivray). Presented by the Earl of 

 Derby, 46. 73. 



The specimen of Tabanus badius in the Brit. Mus. Coll. is 

 from Port Darwin, Northern Territories [Dr. C. F. Strang- 

 mann). Presented by London School Tropical Medicine. 



A small species with a tawny abdomen. Palpi stout at 

 base, ending in a long fine point. Antennce tawny. Fo7-e- 

 head parallel, about six times as long as it is broad anteriorly ; 

 the frontal callus chestnut-brown, oblong, not reaching the 

 eves, with a lineal extension. Legs reddish yellow, tibiae 

 dusky. 



Length 10 mm. 



Tabanus diminutus, Walker, List Dipt. i. p. 183 (1848). 



Type (female), in poor preservation, from Port Essington, 

 N. Australia. 



This type bears a very strong resemblance to Tabanus 

 avidus, Bigot, from Australia and Sydney, but is apparently 

 a distinct species, the paljji being stouter, the frontal callus 

 a different shape, and the tooth of antennal third joint is 

 smaller. The palpi are stout at base for quite half their 

 length, ending in a fine sharp point, pale yellow in colour, 

 with chiefly yellowish pubescence. The antennce are tawny, a 

 little dusky at tip ; the tooth is little more than an angle, at 

 the base of the third joint. Forehead slightly narrower 

 anteriorly, about six times as long as it is broad anteriorly ; 

 frontal callus dark brown, oblong, not reaching eyes, with a 

 lineal extension. Abdomen same colour as in T. avidus, with 

 the trace of a darker spot on tlie second segment ; apex 

 somewhat darker in colour. Legs wholly yellowish ; tarsi 

 dusky at tips. 



Length 13 mm. 



The state of the type precludes a fuller description. It is 

 distinguished from Tabanus nigrimanusy Wlk., by the yellow 

 femora. 



Tabanus constans, Walker, List Dipt. i. p. 186 (1848). 



From N. and N.W. coast, Australia {Presented by 

 Mr. Bynce, Surgeon, R.N., Haslar Hospital). 



A very small species, in such poor preservation that it is 

 difficult to describe it. Palpi appear reddish yellow, stout, 



