756 AUSTRALIAN TABANID^, ii., 



front at base, and about one-half the length of front, no lineal 

 extension; subcallus chestnut, with pale yellowish tomentuni; 

 palpi pale creamy-white, about two-thirds the length of the pro- 

 boscis, pubescence black, with some fairly long, white hairs 

 basally, first two segments of antennae creamy-yellow, with black 

 pubescence, third with the base reddish-yellow, forming an obtuse 

 angle; tooth small, with some black pubescence, annuli dark. 



Thorax denuded, ash-coloured, with lateral and i)osterior 

 margins paler; scutellum paler; pleurpe grey, pubescence grey. 



Abduynen chocolate-brown, with fairly broad, grey bands ; 

 pubescence black; venter black, witli grey tomentum. 



Wimjs clear, veins brown; stigma yellow-brown, elongate, con- 

 spicuous; anterior branch of third long vein with a long appendix. 



Le<js: fore and hind femora blackish; mid with apical half 

 yellowish, tibia) yellowish, apical half of fore-tibiie blackish, tarsi 

 black, hind ones with pale bases, pubescence on femora and tibi;e 

 mixed pale and black, black on tarsi. 



Hah. — N. Territory: Fannie Bay, near Darwin (G. F. Hill, 

 No.l04). 



A species readily distinguished from the other Australian 

 members of Group ix., by its small size, colour, and the front 

 converging toward the apex. 



Co-type in Coll. Hill. 



Tabanus griseoannulatus, sp.n. 



9. Length, 10; width of head, 4; width of front at vertex, 0-5; 

 leiigth of wing, 10-75 mm. 



Head: front grey at base and vertex, blackish elsewhere ; 

 frontal callus black, tumid, nearly square, about two-thirds the 

 width of the front at the base, with a lineal extension reaching 

 the middle of the front; subcallus dark ashen, face and cheeks 

 grey, pubescence grey, beard white; palpi black, about two-thirds 

 the length of the proboscis, with grey tomentum and black hairs, 

 with a few fairly long, grey ones at the Imse ; first joint of 

 antenna' black, with black hairs; second joint light reddish- 

 yellow, with black hairs, about one-third the length of the first; 



