BY ARTHUR WHITE. 7 



This species is not known to me personally. It should 

 be easy to recognize from the closed first posterior cell, 

 in conjunction with the large size. This is the only known 

 Tasmanian species which has the first posterior cell closed. 



Tabanus gentilis, Erich. (Fig. 13). 



A small species with spotted wings. Frontal stripe 

 much narrower above than below ; thorax olive-black, 

 striped with grey ; abdomen brownish-black, with pale 

 grey hindmargins, and a row of whitish centre-spots; legs 

 brown ; wings with four brown spots. 



Length. Female, 11 mm.; male, 10 mm. 



Hab. Bagdad Valley. 



Fig. 13. Wing of Tabanus gentilis. 



Female. Face white, with white pubescence and a few 

 black hairs ; beard white or yellowish-white. Palpi pale 

 orange-brown. Antennae varying greatly in colour, but 

 usually some shade of brown with the apex black, the 

 first joint as a rule lighter than the others ; both first 

 and second joints bear long black hairs. Eyes hairy. 

 Frontal stripe much broader below than above, brown, 

 dusted with grey, the lower part forming a shining brown 

 callus, and the whole bearing abundant long black pubes- 

 cence ; frontal triangle short, grey. Thorax olive-black 

 with five grey stripes, the whole bearing dense black 

 pubescence, and the posterior portion and scutellum 

 fringed with white hairs. Abdomen brownish-black, the 

 first segment unicolorous, remaining segments with pale 

 grey or pale brown hindmargins, and a row of whitish 

 centre-spots, but both spots and hindmargins vary in 

 extent in different specimens ; the second segment also 

 has the shoulders broadly pale grey. Legs with femora 

 and tibiae brown, tarsi dark brown ; the hind femora 

 viewed from above are orange-brown with the knees dark 

 brown ; all femora with long white hairs, the anterior 

 pair bearing in addition short and long black hairs; tibiae 

 with long black pubescence. Wings with four brown 



