﻿TABANIDAE — PART I. 129 



In addition to the para-type of S. gravoti mentioned above, the National 

 Collection possesses a female of this species from the vicinity of Edi-Emi, Meko 

 Road, Western Province, Southern Nigeria, 3. vi. 1910 (Dr. G. M. Gray, 

 TV. A. M.S. ; presented by the Entomological Research Committee). 



TABANINAE. 

 Genus Tabanus, L. 



Tabanus canofasciatus, sp. n. (fig. 5). 



Q. — Length (8 specimens) 1L.25 to 14 mm. ; width of head 4.4 to 5 mm. ; 

 width of front at vertex 0.6 to 0.8 mm. ; length of wing 10.5 to 11.6 mm. 



Eyes densely clothed ivith short, fine, yellowish hair; dorsum of thorax clove- 

 brown, with an olivaceous tinge, moderately shining, and sparsely covered with 

 longish, Naples-yellow hair ; first abdominal segment ochraceous-buff, second 

 segment more or less cinnamon-rufous or chestnut, each of first two segments 



Fig. 5. — Tabanus canofasciatus, Austen, ?. X 3. 



with a clove-brown median basal blotch on dorsal surface, dorsum of second 

 segment with a hoary, pollinose, transverse band, resting on hind margin and 

 shaped as shoivn in fig. 5 ; third and following abdominal segments shining 

 black, hind margins of tergites of third and fourth segments whitish grey, buff, 

 or cream-buff ; wings faintly tinged with drab ; tibiae, except distal extremities, 

 cream-buff. 



Head dull yellowish -grey pollinose, face, jowls, basi-occipital region, and part 

 of occiput clothed with yellowish hair ; front of nearly uniform width through- 

 out, about three and a half times as long as broad, clothed mainly with black 

 or mainly with yellowish hair, or else with black hair at lower extremity, at and 

 just below middle, and on ocellar spot, and clothed elsewhere with yellowish 

 hair ; frontal callus clove-brown, shining, small and inconspicuous, sending off a 

 black, linear, median prolongation towards ocellar spot, which is also clove- 

 brown or blackish ; just below middle of front on each side is an ill-defined, 



25110 B 



