igri,] G. RiCARDO : Revision of the species of Tabanus. 221 



as long as it is broad, slightly narrower anteriorly, the frontal 

 callus large, oblong, nearly reaching the eyes, red-brown, with a 

 short rather stout lineal extension. Thorax black, but covered with 

 greyish yellow tomentum and with yellow appressed hairs, sides 

 and shoulders reddish yellow with pale yellow hairs; breast black, 

 covered with greyish tomentum and with pale yellow pubescence. 

 Scutellum same as thorax. Abdomen narrow, reddish yellow, the 

 last three segments blackish with some grey tomentum, the pubes- 

 cence on dorsum short, black, with bright yellow hairs intermixed 

 which become thick at sides, on apical segments the black hairs 

 are longer ; under side the same, but the yellow pubescence 

 predominates. Legs bright reddish yellow, the tibiae and tarsi pale 

 yellow, the fore tibiae at apex and the fore tarsi black, the other 

 tarsi brown on their apical joints, the fore femora with black short 

 pubescence which is also present on apices of fore tibiae and on fore 

 tarsi and apical joints of others, the pubescence elsewhere yellow. 

 Wings hyaline with pale yellow fore border, stigma and veins. 



cf . The males are similar. Eyes with the large facets distinct, 

 occupying two- thirds of the eye, the small facets extending to the 

 vertex as a narrow border. Face, subcallus and frontal triangle 

 covered with gre3nsh white tomentum, the pubescence of former 

 and the beard white. Palpi pale yellow with yellow hairs and a 

 few black ones at apex. 



Anten7iae light reddish yellow, the first two joints pale 

 yellow, the third joint slender with a very slight tooth. Thorax 

 blackish covered with gre3dsh yellow tomentum, the pubescence 

 consisting of long pale yellow hairs, sides and breast covered with 

 grey tomentum and white pubescence. Scutellum the same with a 

 fringe of long yellow hairs on its basal border. Abdomen the same 

 as in female, conical, the blackish colouring begins on the fourth 

 segment. Legs the same, but the tibiae have chiefly black 

 pubescence. Wings clear, the stigma and veins pale yellow, the 

 rudiment of an appendix ])resent. 



Tabanus simplissimus, 9 ^ , Walker. 



Proc. lyinn. .Soc, i, p. 11 1 (1857). 



Tabanus minimus, 9 , Van der Wulp, Sumatra l^xi)cd. Dipt., 

 18, pi. i, fig. II (1892); n/., Notes Ley den Museum, vii, p. 71 (1885). 



Walker's types male and female from Sarawak (Saunders 

 coll.) ; and others in Brit. Mus. coll. from Perak (Pratt), Kuala 

 Lumpur, Selangor (Durham) ; Railway, Sungei Bessi, Sclangor 

 (Durham), and Selangor (Meade Waldo) ; Bidor, S. Perak 

 (Robinson and Annandalc coll.) ; one male from Singai^ore (Ridley). 

 V. d. Wulp described his species as follows: — 



" A female from Soeroelangoen (Sumatra) in August. Piceous; 

 antennae, tibiae and posterior tarsi at the base red; frontal callus 

 black, shining; wings sul)hyalinc. 9 , length 10 nun. 



Face and cheeks dark grey ; beard white ; subcallus ahow the 

 antennae wholly taken up by a shining black InbtTcle, which has 



