280 Miss G. Ricardo on the 



hairs. Seidell um blackish, with a slaty-grey outer border. 

 Abdomen brownish black, with grey tomentum, becoming 

 slate-grey on the segmentations ; pubescence consists of 

 rather close short black hairs ; in a few specimens from 

 Victoria the abdomen is large, reddish brown, instead of 

 brownish black, in the type and in otbers the extreme 

 posterior lateral borders of the fifth, sixth, and seventh 

 segments are reddish : underside very similar to dorsum, 

 but almost bare. Legs blackish, the tibiae reddish, becoming 

 blackish at the apex on the fore tibiae ; pubescence black, on 

 the outer borders of the tibiae the hairs are uneven in length. 

 Wings clear, with blackish veins, stigma yellowish, appendix 

 present. 



Mr. White informs me that this is the commonest species 

 in Tasmania. 



The male type of Tabanus antecedens comes from New 

 Holland (Hunter), and the antennae are imperfect ; whether 

 it is really the male of the above is doubtful. 



Tabanus circumdatus, ? , Walker, List Dipt. i. p. 185 (1848). 



Tabanus nepos, 9> Walker, List Dipt. i. p. 181 (1848). 

 Tabanus abstersus, $, Walker, Dipt. Saund. p. 58 (1850). 

 Tabanus brevidentatus, 2, Macq. Dipt. Exot., Suppl. v. p. 23 (1854). 

 Tabanus hebes, $>, Walker, List Dipt. i. p. 159 (1848); Surcouf et 

 Ricardo, Etude Monographique des Tabanides d'Afrique, p. 214 

 - (1909). 



The type of circumdatus and nepos are from unknown 

 localities, but priority is given to the former, as it is a better- 

 preserved more typical specimen of the species ; hebes 

 was erroneously described as from S. Africa, abstersus is 

 from New South Wales (Saunders Coll.), brevidentatus from 

 Australia. 



The type of hebes and two other females are very reddish 

 and paler in colouring than is usual, but this is probably 

 chiefly accounted for by the denudation and bad preservation 

 of the specimens ; these remarks also apply to nepos. 



This is probably the species mentioned by Mr. Froggatt 

 in " March Flies"" (Science Bulletin, no. 3, Sept. 1911, p. 6) 

 as Tabanus brevidentatus , " the common small greyish-brown 

 March fly found in the scrub or bush around Sydney." The 

 tvpes of the Macquart species are in the late Mr. Verrall's 

 Coll. 



There are specimens in the Brit. Mus. Coll. from Eidsvoll 

 and Burnett River, Queensland {Dr. T. L. Bancroft) ; New 

 South Wales (Saunders Coll.) ; National Park, New South 



