4 THE DIFTERA-BRACIIYCERA OF TASMANIA, 



tho front bounded above by the eyes and the frontal 

 stripe in the female, or by the eyes alone in the male, 

 and below, in both cases, by the antennae; the ''callus" 

 is a shining spot, or portion of the frontal stripe, devoid 

 of tomentum. As the females are the sex usually met 

 with, the males being either extremely rare or else 

 unknown, the description of the female is in every case 

 given first. 



Table of iht Tasmanian Species of Tabanus. 



1. Wings without a recurrent veinlet (or appendix) 



to the cubital fork. 2 



Wings with a recurrent veinlet to the cubital fork. 4 



2. First posterior cell closed ; very large species with 



the wing-veins suffused with brown. 



Limbatinervis, Macq. 

 First posterior cell wide open. 3- 



o. Thorax and abdomen black. Microdonta, Macq. 



Yellowish species, with striped abdomen. 



Similis, Macq. 



4. Wings spotted. Gentilis, Erich. 

 Wing-veins suffused with brown. 



Tasmaniensis, Sp. nov. 

 Wings hyaline. •'» 



5. Black and grey species; vertex with long black 



hairs; tibial pubescence of unequal length. 



Antecedent, Walk. 

 Brownish species; vertex without long black hairs; 

 tibial pubescence uniformly short. 



Edentulus, Macq. 

 Very small, olive-black species with tibial pubes- 

 cence uniformly long. Imperfectus, Walk. 

 Small dark brown species; hind femora orange 

 above with black knees. 



HOBARTIENSIS. Sp. nOV. 



Large species with red-brown abdomen ; thorax 

 black, striped with grey. 



Cxbcuxdatus, Walk. 

 Sand-coloured species frequenting sandhills on the 



coast. Vetustus, Walk. 



Shining metallic blue-black species. 



Cvaneus, Wied. 



Tabanus microdonta, Macq. 



A large black species, distinguished by the absence of 



a recurrent veinlet to the cubital fork of wings. Antenna? 

 with first two joints brown, third black; thorax black; 



