46 AUSTRALIAN TABANID^E, iv., 



Wings clear; veins dark brown; stigma brown; no appendix. 



Hub. — Q.: Brisbane (H. Hacker). 



Allied to S. grandis Ricardo, from N.W. Australia, but dis- 

 tinguished from it by the frontal callus, tliurax, abdomen, legs, 

 and wings. 



Type in the Queensland Museum. 



Silvius vicinus, sp.n. 



2 Length, 11; width of head, -1; length of wing, 10 mm. 



A small species with yellowish thorax and brown abdomen, 

 with traces of median spots. Femora reddish-yellow, tibia; and 

 tarsi black. Wings clear, appendix rudimentary. 



Head: face and cheeks covered with grey tomentuin and 

 scanty gi'ey pubescence; beard grey, scanty; first two joints of 

 antennae reddish-yellow, pubescence black; third joint darker; 

 apex dark brown, base broad; palpi pale yellowish-red, tapering 

 to a blunt point, pubescence pale at base, scanty; front about 

 twice as wide at vertex, tomentum golden, pubescence black, 

 frontal callus wedge-shaped, brownish-yellow, about one-third 

 the width of the front, lineal extension reaching the ocellar 

 triangle; ocelli prominent; subcallus paler than front: eyes bare. 



Thorax with dense golden-yellow tomentum, pubescence pale 

 yellow and black, the latter very scattered, grey on the sides; 

 scutellum similar to thorax; pleurae slate-coloured, pubescence 

 grey, dense at the wing-roots. 



Abdomen : first two segments yellowish-brown, the rest black- 

 ish-brown, segmentations pale, pubescence black, pale on seg- 

 mentations; there are indefinite, yellow-haired, median, apical, 

 triangular spots on the segments. 



Legs : coxse and femora reddish-yellow, with pale pubescence; 

 tibiae and tarsi black, the former pale at the base, pubescence 

 black. 



Wings clear; veins dark brown; stigma yellowish-brown; ap- 

 pendix rudimentary on one wing, absent on the other. 



llab. — Q : Stradbroke Island (H. Hacker). 



Related to &. fulvohirtus Taylor, but separated from it, inter 

 alia, by its abdomen and legs. 



Type in the Queensland Museum. 



