I go 



Records of the Indian Museum. [Vol. IV 



pubescence, the third joint narrow, slender, with a small tooth. 

 Eves large, the large facets very distinct, the small facets hardly 

 reaching the vertex. Thorax reddish brown or blackish brown, with 

 yellowish brown tomentum and blackish pubescence. Scutellum 

 the same. Abdomen blackish brown or reddish brown, the first two 

 segments reddish, densely covered with ashy grey tomentum, the 

 segmentations very indistinctly paler, the pubescence on dorsum 

 close, black, at sides black ; under side more reddish brown. Legs 

 appearing black, but often dull reddish covered with thick close 

 black pubescence, the femora and hind tibiae with longer black fringes. 

 Wings quite clear, stigma hardly apparent, pale yellow, veins on 

 fore border sometimes blackish, otherwise yellow, the first posterior 

 cell in t3-pe sHghtly narrowed, in some others more distinctly so, no 

 appendix. 



It is just possible that Tabanus basalis, 2 , Macquart, may 

 prove to be the female, but it is a very much narrower bodied 

 insect with dark wings. 



Tabanus albocostatus, 9 , Bigot. 



Mem. Soc. Zool. France, v, p. 649 (1892). [Atylotus.] 



Type 2 from India. 



No specimens of this species are in the collections mentioned 

 in this paper. It is a medium-sized specimen distinguished by the 

 lighter colour of the sides of thorax and of scutellum, the abdomen 

 being a dull brown with very narrow pale segmentations, antennae 

 (incomplete), palpi and beard dark, legs brown. Forehead rather 

 narrow. Length 21 mm. 



Face and subcallus brown with yellowish brown tomentum, 

 pubescence dark brown. Beard brown. Pal-pi dull reddish, 

 covered with grey tomentum and with close black pubescence, long, 

 not very stout at base, ending in an obtuse point. Antennae with 

 the first two joints same colour as palpi, with black pubescence. 

 Forehead brown with grey tomentum, raised, about eight times as 

 long as it is broad, anteriorly reduced to almost half the width it is 

 at vertex, frontal callus black, long, not reaching the eyes, its lineal 

 extension stout, broad, ending in a finer point, not much longer than 

 the callus itself which is oblong. Thorax reddish brown on dorsum, 

 its sides redder, covered together with the shoulders with greyish 

 tomentum which extends narrowly round the posterior border, 

 scutellum covered with it also, pubescence of thorax now almost 

 nil, a few white hairs present, on shoulders brown ; breast brown 

 with yellowish brown tomentum and brown pubescence. Abdomen 

 dull brown, the segmentations very narrowly reddish yellow, with 

 traces of a few white hairs in the middle, and white hairs are 

 distinct on the sides of the first five segments, pubescence otherwise 

 black; under side identical. Legs blackish with black pubescence, 

 the tibiae more dull reddish brown. Wings tinged brown on fore 

 border, veins and stigma brown, no appendix. 



