Tabaiudsu of the AuslruVmn liejion. 279 



black stripes visiljle, also with some yellowish recumbent 

 pubcsconcc and longer black hairs, sides with long dark 

 hairs, p;ilcr lu'low base; of wings. Sntic/lnin identical, bor- 

 dered with long yellowish hairs. Ahdomrn lawny, becoming 

 darker at apex, the median spots, (.-(nnposed of short yellowish 

 liairs, arc short, triangular, forming a more or less continuous 

 stripe from the second to the si.xth segment ; indistinct 

 brownish marks arc often present, even on the basal seg- 

 ments, becoming more distinct on apical segnicnts ; the 

 puljeseence on dorsum is rather thick, consisting of short 

 black hairs and a few yellow ones intermixed on the second 

 and third segments ; hairs at sides are white, forming pre- 

 sumably the white stripes which Walker mentions ; segmen- 

 tations often grey tomentose ; underside identical, with 

 broader grey segmentations on the darker apical segments. 

 Leys pale yellowish, the femora reddish brown, covered with 

 white pubescence ; apical joints of tarsi blackish, pul)escencc 

 on tibiie and tarsi black. U'iiif/s clear, veins brown, stigma 

 yellowish brown ; no appendix. 



Var. B, described by Walker, has brown spots on th^' first 

 and second scgn)ents. 



Tabanus brevior, AValker, List Dipt. i. p. 188 (1848). 



Tahanm anellositt, Suraincrs, Ent. Notes London School Tropical 

 Medicine, p. ^M (I'Jll'). 



Type (feraale), in poor preservation, from Port Essington, 

 N. Australia, and another female from same locality (Gould). 

 This last was described by Walker as var. B of Tabanus 

 VI art/ hiatus, which is a Sihius species (see Ann.&: Mag. Nat. 

 Hist. (7) viii. p. SUtJ, 11)01) ; in general appearance it cer- 

 tainly bears a strong resemblance to Si/lriiis muryiualus, but 

 mav be at once distinguished by the absence of ocelli. 



A very small rcddi>h-brown species. Pali)i yellowish, the 

 same width throughout. Wings slender. Anteume reddish 

 yellow, with black tips. 



Length 8i mm. 



Face coverctl with ashy-grey tomentum. Beard yellowish. 

 Anicniue tawny, tin; apical joints black, the first two joints 

 and the small tooth with black pubescence. y^«/yy/ yellowish, 

 with rather thick black and white ])ubescence. Forehead 

 about five times as long as it is broad anteriorly, parallel ; 

 frontal callus brown, pear-shaped, not quite reaching eyes, 

 with a rather stout lineal extension. Thorax denuded, 

 rediiish brown, witii grey tomentum. Abdomen short and 

 rather broad, tawny-coloured, with darker brown markirigs, 



I'J* 



