segments with the sides ashy grey ; pubescence on the disc abundant, 

 rather short black, but the posterior ashy grey bands (except that on 

 the basal segment) and the similar coloured sides of the two basal 

 segments furnished with conspicuous white pubescence which becomes 

 sparser on the posterior two bands ; these white bands diminish their 

 width one after one ; the seventh segment with some conspicuous long 

 sloping black bristly hairs. Ventre b'ackish, but almost wholly covered 

 with ashy grey tomentum and tiny white pubescence, except on the 

 bases of three postecior segments brown dusted and black haired ; the 

 seventh segment with abundant long erect but curved black bristles 

 which slightly extend up to the fifth segment along the median border. 



Length: 9.5 mm. 



Except for this very slight difference, that the eyes are not 

 conspicuously pubescent, this species is identical with Therioplectes 

 subcallosns, Ricardo, described in the Records of the Indian Museum, 

 Vol. IV, p. 227, 1911. The latter species sometimes has very scarce 

 and very inconspicuous pubescence on the eyes, and this form may be 

 the same as Tabanus sexdnctus. In the British Museum, I compared 

 one specimen from Kumaon; India, arranged by Miss Ricardo in a 

 drawer as sexcinctits, with the specimens of Th. subcaltosus, which are 

 also indentified by the same student, but I have not found any valid 

 differences between them. 



At the present time, however, I hesitate to determine that Th. 

 subcallosus is a synonym of sexdnclus, because I have not examined 

 the type of Ricardo. 



T. sexdnctus is distinguished from the allied species belonging 

 to the Group II of Ricardo, by six white bands on the abdomen, hy 

 much more ashy grey thorax, by more distinct ocelligerous tubercle, 

 and by more distinct pubescence on the eyes. 



I posses only one female from Rano (May) in southern Formosa, 

 from which the above is described. It is noticed that the species 

 occur in India, Burma, and Formosa, but this may be rather a rare 



