﻿TABANIDAE. — PAKT II. 331 



stripe on each side and two small admedian spots close to hind margin {instead 

 of six separate spots), by median spots on third and fourth abdominal tergites 

 being bluntly triangular, instead of nearly semicircular in outline, by ivhitish hind 

 borders to ventral scutes of third to sixth abdominal segments inclusive being 

 much narroiver, and by pale proximal portion of hind, tibiae in Q being much 

 more restricted in extent. 



Head: face, jowls, basioccipital region, and occiput light grey pollinose, 

 frontal triangle in rf and subcallus in Q sepia-coloured when denuded ; face, 

 jowls, and basioccipital region clothed in <J with pale yellowish or whitish hair 

 (on sides of face often mixed with brownish hairs), and in Q with whitish hair ; 

 front in Q of rather less than moderate width, narrowing somewhat below ; 

 frontal callus in Q dark brown, oblong, extending from eye to eye, its upper 

 extremity emitting a narrow dark brown median ridge or streak, which is visible 

 at least as far as middle of front and often further ; vertex in Q black and 

 clothed with short, black hairs ; when the Q is viewed from above, the black 

 vertical area often appears to extend forwards to below the middle of the front, 

 its anterior extremity being separated from the frontal callus by a small silvery- 

 white patch, clothed with appressed, glistening silvery or yellowish hairs ; when 

 the Q is viewed at a low angle from behind, however, the black area appears 

 confined to the vertex, and the space between it and the frontal callus appears 

 light grey, with its lower portion longitudinally divided by the dark brown 

 median ridge, and its upper two-thirds partially clothed with black hairs ; upper 

 two-thirds of eyes in <J (except hind borders) occupied by a fusiform area 

 (bisected by middle line formed by inner margins of eyes), composed of larger 

 facets than elsewhere ; in many dried specimens this fusiform area still appears 

 more or less grey, with a dark lower margin, and a broad dark band (tapering 

 towards the outer margins of the eyes) across the middle ;* palpi dusky-grey 

 pollinose on outer surface, proximal joint clothed with yellowish or whitish hair, 

 terminal joint in $ clothed with blackish hair ; terminal joint in Q elongate and 

 tapering, paler at base on outer side, where it is clothed with minute, appressed, 

 silvery-white or yellowish hairs, remainder of outer side covered with minute, 

 appressed, black hairs ; first and second joints of antennae fawn, or isabella- 

 coloured, greyish pollinose, first joint clothed below with whitish hairs, and with 

 minute black hairs above and on its upper distal angle, third joint narrow and 

 elongate in c? and at least relatively so in Q , clove-brown, more or less cinnamon 

 at extreme base. Thorax : hind border of main portion of dorsum, including 

 greater part of postalar calli, light grey pollinose, clothed with appressed, 

 glistening, yellowish hair (on postalar calli with whitish or silvery-white hair) ; 

 admedian longitudinal stripes in tf sparsely clothed with fine, yellowish hairs, 

 in Q more thickly clothed with short, appressed, glistening, Naples-yellow hairs, 

 which in this sex also partially clothe the interspace between the anterior 



* As regards the markings of the eyes in life, Mr. S. A. Neave, in a field-note attached to a 

 $ specimen collected by him at Entebbe, Uganda Protectorate, 5. vii. 1911, writes : — "Eyes 

 banded ; blue and crimson below, dusky and grey above"; and Dr. R. Van Someren, in a note 

 on a £ caught by him on the Luimi River, Toro, Uganda Protectorate, 22. i. 1911, says that 

 the eye has " a conspicuous, green, horizontal band." 



