﻿TABANIDAE — PART I. 



127 



extension looks like an elongate-ovate swelling in the middle of or just before the 

 middle of the under side of the proboscis. 



The only species of Subpangonia yet described is the geno-type, S. gravoti, 

 Surcouf,* of which the typical series was obtained in French Congo, near the 

 southern boundary of Kamerun, in July and August, 1906. The new species 

 characterised below, examples of which have been received from Ashanti and 

 Southern Nigeria, closely resembles S. gravoti, of which, by the courtesj r of 

 Baron J. M. R. Surcouf, a para-type is now in the British Museum. 



Subpangonia grahami, sp. n. (fig. 4). 



Q. — Length (3 specimens) 12*2 to 13*5 mm. ; width of head 4*2 to 4*6 mm. ; 

 width of front at vertex 0*6 mm. ; length of proboscis 3*5 to 3' 8 mm. ; length of 

 labella 2 to 2*25 mm. ; length of wing 12'8 to 14 mm. 



Fig. 4. — Subpangonia grahami, Austen, 9 . X 2$. 



Dorsum of thorax clove-brown, with, conspicuous dull olive, grey, or yellowish-grey 

 pollinose markings; dorsum of abdomen, dusky tawny, moderately shining, last three 

 or last four segments clove-brown, hind borders of second, fourth, and two following 

 segments, at least towards lateral extremities, clothed with silvery-white hair ; wings 

 strongly tinged with raw umber ; legs clove-brown or dark brown. 



Head yellowish-grey pollinose, lower part of sides of face and anterior portion 

 of jowls clove-brown ; face short, clothed on each side with yellowish hair ; 

 basioccipital region clothed with whitish hair ; ocelli wanting ; vertex blackish 

 clove-brown ; upper half of front with a dark brown, sagittate mark, central 

 portion of which when rubbed looks like a low, ill-defined, blackish callus, and of 

 which the apex is in contact with the dark area occupying the vertex ; extending 

 upwards from base of each antenna is a dark brown, elongate mark, the upper 

 extremity of which is more or less distinctly bifurcate but does not reach the 

 sagittate mark ; palpi clove-brown, small, terminal joint narrow and curved, 

 proximal joint clothed below with blackish hair ; first and second joints of 

 antennae clove-brown, dusky grey pollinose, clothed with blackish hair, which is 



Log. cit., p. 283. 



