igii.] G. RiCARDO : Revision of the species of Tabanus. 227 



Length 16 mm. 



Antennae dull yellow, blackish at the base and at the a])ex, the 

 third joint deeply incised above with a fairh* prominent tooth ; palpi 

 dull yellow (in the Latin description flesh-coloured). Face, beard 

 and forehead grey ; frontal callus and spot at vertex blackish ; 

 the former very narrow, elongated, suddenly dilated below. Thorax 

 dull yellow, a little reddish, with four wide stripes indistinct, abbrevi- 

 ated posteriorly, blackish (dull chestnut in the Latin description); 

 sides greyish ; scutellum brownish yellow ; abdomen pale yellow, 

 a little brown at the apex ; pleurae brownish as w^ell as the stem 

 of the halteres, the club of latter whitish ; wings very pale grey, 

 narrowly tinged brownish at the base, stigma the same colour, no 

 appendix ; legs greyish black, tibiae pale gre}" at the base, the pos- 

 terior ones longitudinally tinged with brown behind ; eyes naked. 

 From Laos. One specimen. Bigot, I.e., p. 205. 



This species is not known to me. 



Group XL 

 Subgenus Therioplectes, Zeller. 



Isis, 1842, xi, 819 (1842). 



In this group are comprised all species with distinctly pubes- 

 cent eyes, and ocelligerous tubercle on vertex. The heads of the 

 males not differing much in size or shape from those of the females. 

 The facets of the eyes in the males are uniform in T. hirtus, W'lk., but 

 in T. suhcallosus, n. sp., the}^ are very distincth' different in size; 

 the other males are not known. Eyes with cross-bands. 



There are only four species from the Oriental Region, forehead 

 broad, three to four times as long as it is broad. Species rather 

 pubescent. Length 11 — 17 mm. 



Tabanus (Therioplectes) subcallosus, 0* 9 , n. sp. 



Types d- and ? and two other females from Mussoorie, 

 India (Brunetti coll.); others from N.-W. Provinces and Dalhousie 

 in Brit. ]Mus. coll. 



A small black species with white l)ands on al)domen, easily 

 recognised by the shining, yellowish Ijrown subcallus, by the two 

 separate transverse calli of forehead, and by the slightly incrassate 

 white fore tibiae. Length iij^ mm. 



9 . Face covered with greyish tomentum and white pubescence. 

 Palpi obscurely yellow, thickly covered on the outside with grey 

 tomentum, with thick long white pubescence at base and with some 

 short black hairs elsewhere, stout, ending in short acute point. 

 A ntcnnae reddish , the first two joints yellowish with black pubescence , 

 the tooth of third joint very slight. Subcallus convex, brownish 

 yellow. Forehead broad, about three and a half times as long as it is 

 broad, almost the same width throughout, covered with grey and 



