i68 Records of the Indian Museum. [Voi.. IV, 



divisions of the third, black, first division of the third yehow, tooth 

 moderate. Thorax with tomentum of a rather yellowish grey ; 

 sides of a whitish grey. Abdomen with fawn-coloured incisions, 

 terminated by yellow ; second segment with a testaceous lateral 

 spot reaching the two borders ; under side with tomentum and seg- 

 mentations whitish. Legs black; tibiae of a yellowish white, black 

 at the apex. Wings clear, stigma brown, first posterior cell closed 

 near the border. From N. China (M. Bigot). Macquart, Dipt, 

 exot., V, p. 45. _ 



This description by Macquart of his species is unusually in- 

 correct as he overlooked the gre}' triangular spots of the abdomen, 

 yet there is no doubt of the identity of the type, which is 

 however a very faded dirty specimen, a male measuring 15 mm. 

 Schiner could hardly identify his male specimen from the above- 

 mentioned description, and gave it a new name. His description is 

 as follows : — 



cf , type, from Hongkong. Closely related to Tahanus man- 

 darinus, and identical in mam- respects with it; the dift'erences are 

 as follows. 



Abdomen at bottom dark brown, the two basal rings as in 

 the above-mentioned species, the following three rings with white 

 tomentum, leaving four almost triangular spots of the ground colour 

 free on the anterior border ; or these segments might be described 

 as brown, each with an anteriorly indented, posterior band; 

 under the white tomentum, in some lights less distinct, the ground 

 colour is reddish yellow, the sixth segment on the under side black- 

 ish, at the sides reddish yellow, the tomentum as in Tahanus 

 mandarinus. Antennae rust}^ yellow, the third joint at the apex 

 black-brown, the middle and posterior tibiae are almost wholly red- 

 yellow. In every oilier respect identical with Tabanus mandarinus. 

 6 lines. One male. 



Though this species is so closely allied to Tabanus mandari- 

 nus I do not think it possible to consider it as merely a variety 

 of it. 



I have before me also, from the same locality, a female speci- 

 men that possibly ma}" be the female of T. administrans, the 

 identity of all plastic characters at least encourages this opinion, 

 but the abdomen is differently marked (and besides is not well pre- 

 served), and the first posterior cell is narrowed but not closed. 

 The forehead is fairly broad, whitish grey above the antennae, the 

 callus black, broad at the base, then becoming narrower and con- 

 tinued to the vertex as a line, ocelligerous spot present, but no 

 ocelli visible. Schiner, Reise der Novara, Diptera, p. 83. 



Portschinsky described his type from Chinese Mongolia thus — 



This species is similar to Tahanus autumnaUs, from which 

 it is quite distinct, the first posterior cell of wing being closed with a 

 long petiole, the size of body is less and it is much narrower in 

 shape. 



Black with cinereous or grey tomentum, sub-naked or verj- 

 shortly pubescent. 



