﻿TABANIDAE — PART I. 133 



Gold Coast (Colony and Protectorate), and Sierra Leone Protectorate: 

 type from Obuasi, Ashanti, 10. xii. 1907, " caught on wall of veranda at 4 p.m., 

 after rain" (Dr. W. M. Graham, W.A.M.S.) ; a second specimen (para-type) 

 from the Tano River, ten miles north of Half Assinie, 25-30. i. 1910 (W. Van 

 Eeden) ; a third female from Darn, Sierra Leone Protectorate, 2. viii. 1911 

 (Dr. J. C. Murphy, W.A.M.S. : presented to the British Museum by the 

 Entomological Research Committee). 



The species described above is allied to Tabanus ohscurefumatus, Surcouf, 

 which was originally obtained in Spanish Guinea, and is represented in the 

 British. Museum collection by a number of female specimens from Southern 

 Nigeria. While resembling Tabanus tenuipalpis in the narrowness of its front 

 and frontal callus, in the peculiarly slender shape of the last joint of its palpi, 

 and in its abdominal markings, the female of T. ohscurefumatus is distinguished 

 from that of the new species inter alia by the front being actually slightly 

 narrower, by the terminal joint of the palpi being slate-grey or slate-coloured 

 instead of as described above, by the slate-black colour of its abdomen, and by 

 its legs, except the proximal portion of the front tibiae, being black. 



Tabanus barclayi, sp. n. 



Q. — Length (16 specimens) 11*25 to 14 mm. ; width of head 3*4 to 4*2 mm. ; 

 width of front at vertex 0*6 to 0*75 mm. ; length of wing 9*6 to 11 "8 mm. 



Smallish or small, somewhat narrow-bodied, elongate species, with relatively rather 

 broad front, which is often wider below, and abdomen tapering slightly toioards 

 distal extremity ; dorsum of thorax greyish sepia-coloured, longitudinally striped 

 with grey ; dorsum of abdomen sepia-coloured or mummy-brown, with narrow, 

 smoke-grey, median longitudinal stripe, and a much broader, drab-grey or yellowish- 

 grey, longitudinal stripe on each side of this, between median stripe and lateral 

 margin. 



Head : subcallus, face, jowls, and basi-occipital region whitish-grey pollinose, 

 occiput smoke-grey ; face, jowls, and basi-occipital region clothed with whitish or 

 white hair ; front yellowish-grey pollinose (its upper portion clothed with minute, 

 blackish hairs), often distinctly wider at lower than at upper extremity, but if 

 not, then inner margins of eyes bordering front parallel ; frontal callus large, 

 shining dark brown, narrowly separated from eye on each side, its lower margin 

 straight, its upper margin angulate, and produced into an elongate, more or less 

 oval or ovate upper callus ; palpi cream-coloured, proximal joint clothed below 

 with whitish or white hair, terminal joint moderately or but little swollen at base, 

 clothed on outer side with minute black hairs, mixed with minute, glistening, 

 cream-coloured hairs ; first and second joints of antennae greyish-buff, clothed 

 with minute black hairs, third joint ochraceous-buff or cinnamon, annulate 

 portion, which is fairly long, darker (brownish or dark brown). Thorax : dorsum 

 with three grey, longitudinal stripes commencing on front margin, median stripe 

 very narrow and scarcely extending beyond level of transverse suture, admedian 

 stripes broader and entire ; lateral borders of dorsum also grey ; pleurae and 

 pectus light smoke-grey pollinose, clothed with whitish hair. Abdomen : grey 

 stripes on dorsum complete, or extending from base at least as far as penultimate 



