BY E. W. FERGUSON AND MARGUERITE HENRY. 843 



hairs, 3rd joint with basal portion longer than the annuli, ex- 

 panded at the base, obtusely angulate without distinct tooth. 

 Front parallel, black, clothed with yellowish brown tomentuin; 

 callus subquadrate, large, protuberant, resting on subcallus, 

 reaching eyes on each side with hardly any linear extension. 

 Eyes bare. 



Thorax black, clothed with dark brownish tomentum, grey on 

 sides, scutelhun similar ; pleurae clothed with grey tomentum, and 

 rather scanty whitish hairs below wing roots. 



Abdomen black, with very narrow, pale whitish segmentations, 

 clothed with brownish tomentum with scattered depressed brown- 

 ish hairs and a few white straggly hairs on segmentations. Ven- 

 ter blackish, segmentations narrow, pale, dark brown tomentum 

 in the middle, paler at the sides. 



Legs reddish yellow, fore legs darker, tarsi somewhat infus- 

 cate. 



Wings clear; veins brownish; stigma light brown, incon- 

 spicuous. No appendix present. 



Only a few specimens were obtained. Dates of occurrence 

 January 16th till February 20th. 



A small species closely allied to T. brevior and T. parvus, 

 but with a differently shaped frontal callus reaching the eyes on 

 each side. In general appearance it is very suggestive of Silvius 

 australis Ricardo. 



Tabanus kewensis, sp.n. (Plate xlvi., fig. 5.) 



A medium sized brownish species resembling a light coloured 

 species of T. circumdatus in appearance. 



Female. Length, 11.5 mm.; width across eyes, 5 nun.; wing, 

 10 mm. 



Face densely clothed with while tomentum, with scattered 

 whitish pubescence. Beard white. Palpi light yellowish brown, 

 slightly thickened at the base, with rather dense, silky white 

 pubescence, thickest at base, intermingled with darker hairs. 

 Antennae yellowish brown, annuli darker, 1st and 2nd joints 

 densely clothed with thick hairs, 3rd joint strongly expanded 

 and angulate at base, basal portion about as long as annuli. 

 Subcallus light brown densely clothed with grey tomentum. 

 Forehead moderately wide, slightly narrowed at vertex, clothed 

 with dense grey tomentuin and with scanty brownish hairs, 

 thicker at vertex. Callus light brown, shining, almost square, 



