Tabanitlae of the Australian Rejion. 21 



Tabanus sarpa, $ , Walker, List Dipt. i. p. 175 (1818), et v. 

 Suppl. i. p. 255 (1854<). 



Tabanus impar, $ , Walker, Newman, Zoologist, viii. Appendix lxxi. 

 (1850), et List Dipt, v., Suppl. i. p. 255 (1854). 



Female (type) from New Zealand, 41-99 (Pelerin), and 

 another 97, 86 (II. Clark), also from New Zealand. Male 

 (type of impar) from New Zealand. 



A moderate-sized blackish species with well-marked grey 

 median spots on abdomen. Forehead with a large triangular 

 dark callus. Legs and antennae blackish. 

 Length 14-15 mm. (females). 

 Hind tibiae with spurs ! 



? . Face covered with ashy-coloured tomentum and white 

 and brown hairs. Beard thick, white. Palpi small, reddish 

 yellow, with grey tomentum and black pubescence, ending 

 in a point^ Proboscis rather long for a Tabanus species, 

 probably 3 mm. Antennas with the first two joints reddish 

 yellow and with black hairs, the third black, with a distinct 

 tooth ; shape of antennae normal. Forehead a little narrower 

 at vertex, about four times as long as it is broad anteriorly ; 

 the large callus almost reaching the border of eyes, with a 

 short lineal extension, or, rather, ending in a short point, in 

 the other female it is more drawn out ; colour same as face. 

 Eyes with short but thick pubescence. Thorax blackish 

 brown, with four narrow grey tomentose stripes, the median 

 ones broken off at the middle suture, with two spots on 

 posterior border almost connecting with them ; shoulders 

 reddish with black hairs ; pubescence on thorax appressed 

 and pale, with some black hairs. Scutellum same colour as 

 thorax, with a grey outer border fringed with long black 

 hairs. Abdomen blackish, the four grey median spots on 

 the second and following segments very distinct ; fore 

 borders of second segment also grey tomentose; pubescence 

 black, on spots white ; underside with grey tomentum. 

 Legs blackish, tibiae reddish brown, some white pubescence 

 on femora and on tibiae, elsewhere black. The hind tibiae 

 have two distinct spurs, but as no ocelli are present and the 

 shape of antennae, forehead, and palpi is very similar to 

 species of Tabanus, it seems inadvisable to create a new 

 genus for it at present. Wings clear ; veins and stigma 

 brown. 



<$ . Is identical, but the abdomen much more fulvous, 

 leaving the central part black. Eyes appear to have the 

 facets all equal, or if any larger ones are present they are 

 not very noticeable. 



