igii.] G. RiCARDO : The Oriental Tabanidae. 371 



Head broader than the thorax, semicircular. Face yellowish 

 brown, with a large, elevated, shining chestuut-brown tubercle in 

 the centre, extending from the mouth to the base of the antennae. 

 Region of the mouth black, hairy. Proboscis about the length of 

 the head. Eyes dark rufous brown, large and meeting on the 

 vertex. Antennae black, rather more slender than in the female, 

 and having the spine at the base of the terminal joint not so prom- 

 inent. Thorax orbicular, black, hair^^ Wings marked as in the 

 female. Abdomen black, with the posterior margin of the first 

 joint, the whole of the second joint, and the anterior margin of 

 the third joint, bright rufous. Legs black. 



Length ^ inch, expansion of wings i inch. P'rom Northern 

 India. In the collection of Col. Hearsey. vSaunders, /. c, iv, 

 p. 233, pi. xiv, fi^-. 3. 



One male from Barrackpore, Calcutta (Rothney), 82, 15; one 

 male from India (Saunders coll.), 54, 13 ; one female from Bengal 

 (Campbell), 42, 25 ; one male (Saunders coll.), 68, 4. 



Saunders described and figured both the sexes ; the male type 

 he mentions as belonging to a Colonel Hearsey, so that it seems 

 probable that the Museum does not possess the male t5^pe, and 

 certainly not the female type. There are said to be three speci- 

 mens labelled Saunders coll. in the Oxford Museum, which may 

 perhaps include the types. Ricardo, Ann. Mag. Nat. Hist. (7), viii, 

 p. 298. 



This species is easily distinguished by the presence of a pro- 

 longation on the third joint of antennae at base The male is 

 black, with basal segments of abdomen bright rufous, the female 

 wholly black, both with olackish brown wings in which two pale 

 spots are very distinct, the lower one situated at base of second 

 submarginal cell, extending across the apex of the first basal cell 

 and base of first posterior cell, occupying the basal half of discal 

 cell, and the apex of second basal cell and bases of fourth and 

 tifth posterior ceUs; the upper one is on the second submarginal 

 cell round the base of fork of third longitudinal vein extendin:.^ 

 into the first posterior cell. There are two females in the Indian 

 Museum from Calcutta and locality not specified. 



Gastroxides ornatus, 9 , Bigot. 

 Rev. et Mag. Zool. (2), xi, p. 305 (1859). [Ditylomyia.'] 

 Ricardo, Ann. Mag. Nat. Hist. (7), xiv, p. 372 (1904). 

 The type, by the markings of the wings and the general .shape 

 of the abdomen, bears a general resemblance to Gastroxides ater 

 (Saunders), the only heretofore known species of the genus. Bigot 

 mentions the presence of ocelli, but did not note the spines on the 

 hind tibiae, these two characters dividing the division Pangoninac 

 from Tabaninae. The antennae have only five rings on the third 

 joint, not eight or nine as he supposes. In the shape of the head, 

 the insertion of the antennae, and the presence of the tubercles on 

 the forehead it resembles G. ater, but is larger and of different 

 colouring. 



