i88 Records of the Indian Museum. ' [Vol. IV, 



vertex chestnut-coloured (ocelli indistinct), the former at the base 

 wider and square, very much restricted in the middle, narrow, 

 oval, prolonged above. Thorax of a pinkish or flesh-coloured grey, 

 sides whitish. iVbdomen black, with a median series of triangular 

 spots, wide towards the bases, smaller and smaller towards the 

 extremity, and on each side another series formed of narrow spots, 

 all these spots are whitish ; squamae brown ; halteres pale fawn- 

 coloured. Legs black, femora with a whitish tomentum below, base 

 of tibiae widel}^ whitish. Wings clear, no appendix. Eyes naked. 



Laos (Siam), one specimen, Bigot, Nouv. Archiv. ]Mus. Hist. 

 Nat. Paris (3), ii, p. 203. 



This species with black abdomen marked with spots ma}" 

 possibly be aUied to Tabanus leucopogon, Bigot, from the descrip- 

 tion of the frontal callus, hut is a larger insect. 



Group IX. 



Forehead with one square, narrow, or oblong callus, always 

 prolonged towards the vertex as a more or less narrow line, four to 

 ten times as long as it is broad. Species with paler bands on the 

 abdomen, spots are also sometimes present, large, medium-sized, 

 or small species. 



Tabanus orientalis, Wied., Tabanus gcniculatus and incultus, 

 V. d. Wulp, are not included in the table, being unknown to me. 

 Tabanus geniculatus has a ver^^ narrow parallel forehead and narrow 

 callus, Tabanus incultus the same but narrower anteriorlv. 



Tabanus servillei, 9 . Macq. 



Dipt, exot., i, p. 132, 13 (1838) ; Walker, List Dipt. Brit. Mus., 

 v, p. 246 (1854). 



Tabanus pyrausta, 9 , Walker, Zoologist, viii, Appendix Ixv 

 (1850) ; id., List Dipt. Brit. Mus., v, p. 246 (1854). 



Antennae black. Thorax fulvous. Abdomen black ; with 

 white segmentations. Wings red ; the first posterior cell closed. 

 Length 11 lines. 



Palpi black, wide at the base. Face and forehead greyish yel- 

 low ; the latter narrow with a black line, a little raised anteriorly. 

 Thorax with greyish 3^ellow tomentum. Abdomen black ; the 

 four first segments with a narrow 3^ellowish white posterior band. 

 Calyptera blackish, bordered with white. From E. India. M. 

 Marc. Museum. One specimen from Java occurs in M. Serville's 

 collection. Macquart, Dipt, exot., i, p. 132, 13. 



The specimen mentioned as from Java, is apparently the one 

 with another female now in Mr. Verrall's coll. in very bad condi- 

 tion, but from the description and comparison of these with Walker's 

 types there is no doubt they are identical. Walker placed the two 



