2i)4 



those in the female but with much brownish appearance as all the pale 

 hairs are yellowish brown or yellowish red, the middle femora bearing 

 a rather long conspicuous black fringe on the inner side. 



Abdomen much slender and redder than in the female, the 

 median triangles smaller and almost usually not extend up to the 

 anterior margin of each segment, but on each of the second and third 

 segments there is a narrow though conspicuous and well-defined black- 

 ish stripe from the anterior margin to the top of the triangle, these 

 short blackish stripes being not conspicuous in the female owing to the 

 blackish tinge on the sides of the median spots ; pubescence on the 

 dorsum and the ventre similar to that in the female, but the daikei 

 median part much narrower than in the female. 



Length : 19-22 mm. 



This species in appearance is allied to Tabanus exotitus, Ricardo, 

 and T. trigonus, Coquillett, but easily distinguished from the both, by 

 the abdomen with no conspicuous broad yellowish hind margins; r t nd 

 it may be distinguished from the allied species in the world, by the 

 distinct pale yellow fore tibiae with white hairs of the female, and by 

 the longer narrow white-haired triangular median spots of the abdomen. 

 T. indianus is not very common throughout the Island of 

 Formosa, and its occurence is probably restricted to the southern parts, 

 as I have an actual record from Takao only : it is also known that 

 this species occurs in India. It is noticed that the female bites cattle 

 and buffaloes in the day time, in Formosa. 



This fly varies but little in the amount of the blackish colouring 

 sometimes surrounding the median abdominal spots in the female, and 

 in the distinctness of the short black stripes on the second, thirds, 

 and fourth abdominal segments in the male ; as well as in the both 

 sexes, in the amount of the colouration of the first posterior cell of 

 the wings, and in the darkness of the colour of the antennae and 

 legs. 



