BY E. W. FERGUSON AND G. F. HILL. 



257 



To the naked eye the wings appear practically uniformly dark grey, without 

 any intensification along the veins, but very slight indications of this can be seen 

 with a lens. 



To some extent the present species shows a relation to T. pseudoardens, but 

 the colouration and clothing are very different. The species would fall into Miss 

 Ricardo's group viii. Type in Australian Institute of Tropical Medicine, Towns- 

 ville. 



Tabanus toeebsi, n.sp. (Text-flgs. 7 and 8). 



A moderate-sized brown species with narrow parallel-sided forehead. 



2. Face densely clothed with greyish white tomentum, with fine scanty 

 white pubescence; subcallus reddish-brown, almost bare, with scanty brown 

 tomentum at sides. Beard white. Palpi black, second joint moderately stout, 

 rather slightly curved, and about three-quarters length of proboscis, clothed with 

 black decumbent pubescence. Antennae (Text-fig. 7) yellowish-brown, the first 

 joint reddish-brown and the annuli black; first joint not greatly widened at apex, 

 set with black hairs on upper and lower margins, second short, third elongate, 

 moderately dilatate at base, with a short tooth on upper surface, annuli about as 

 long as rest of joint. Forehead (Text-fig. 8) comparatively narrow, parallel- 

 sided; clothed with brown tomentum and a few dark hairs; callus reddish-brown 

 to black, shiny, oblong, not quite reaching sides, with a long linear extension to 

 vertex. Eyes bare. 



Text-figs. 7,8. — Tabanus torresi, n.sp. 7. Antenna . 8. Head, frontal view. 

 Text-figs. 9,10. — Tabanus griseicoIor,n.s^. 9. Antenna: 10. Head, frontal view. 

 (All figures drawn from types) . 



Thorax black, densely clothed with brown tomentum, with a lighter band on 

 sides extending above wing-roots and on to scutellum; with sparse creamy de- 

 pressed pubescence, denser on the lateral band and extending on to the sides and 

 more thinly across base of scutellum, disc also with semi-erect dark hairs. Pleura* 

 with gTey tomentum and long tufts of silky white pubescence. 



