52 AUSTRALIAN TABANID^fc, IV., 



Head: face, cheeks, subcallus. and front chamois-coloured, 

 pubescence on face and cheeks white, scanty; beard grey; front 

 slightly narrower anteriorly, pubescence black, with a tuft of 

 pale and black hairs on the vertex, frontal callus reddish-brown, 

 pear-shaped, with a long, linear extension, about two-thirds the 

 length of the front; palpi pale creamy, second joint swollen, 

 tapering to a fine point, pubescence pale, with a few, short, 

 scattered, black hairs; first two joints of antennae pale reddish- 

 yellow, with greyish tomentum and black pubescence, third joint 

 darker, annuli dusky, expanded portion with a very small tooth. 



Thorax black, shoulders yellowish-red, tomentum grey, pubes- 

 cence black and pale, fairly long on the sides, scutellum similar 

 to thorax; pleural with grey tomentum and pubescence. 



Abdomen: first three segments honey-yellow, the remainder 

 black, second and third with an obscure black spot, somewhat 

 variable in size, tomentum grey, pubescence black and pale; 

 venter pale reddish-yellow, darker towards apex, with dense grey 

 pubescence, lateral margins with pale pubescence except at the 

 apex. 



Leys reddish yellow, tarsi darker, pubescence pale on coxa? and 

 femora, black and pale on tibia?, and black on tarsi. 



Wings, clear; veins yellowish-brown; stigma yellow; no ap 

 pendix present. 



Hob.— N. Territory : Darwin (G. F. Hill, No. 105). 



A medium-sized species, more or less closely related to T. ob- 

 scurilineatus mini, and T.queenslandii Ricardo. 



Para type in Coll. Hill. 



Tabanus quadkatus, sp.n. 



Q. Length, 9 105; width of head, 3-3-5; length of wing, 8 9mm. 



//fad: face with yellowish tomentum, slightly protuberant, 

 grooves well developed; cheeks grey, tomentum and pubescence 

 grey; beard grey, scanty; subcallus yellowish, with dull golden 

 tomentum; front black, broad, with dark pubescence, giving it a 

 dusky appearance, and a few pale hairs on the sides, parallel, 

 about twice as long as broad, frontal callus dark red-brown, 

 square, about half as wide as the front, and resting on the sub- 



