291 



A NEW 8PECIES OF TAB ANUS FROM THE ANGLO- 

 EGYPTIAN SUDAN. 



By EENEST E. AUSTEN. 



(Published hij permission of the Trustees of the British Museum.) 



Tabanus kingi, sp. n. (Fig. 1.) 



? . — Length (four specimens) 13 to 16 mm,. ; width o£ head 4'1 to 

 5*5 mm. ; width of front at vertex 0'5 mm. to just under 1 mm. ; length of 

 wing 10 to 13 mm. 



Superficially somewhat resembling T. taeniola, Pal. de Beauv., but distin- 

 guished by the more quadrate shape and blacker colour of the frontal callus 

 (cf. fig. 2), the more ochraceous-rufous * colour and usually greater breadth of 



Fig. 1. — Tabanus kingi, Austen, 5* X 3. 



tlie proximal portion of the third joint of the antennce, the absence of con- 

 spicuous longitudinal stripes on the dorsum of the thorax^ the less clearly defined 

 median stripe or median longitudinal series of lighter markings on the dorsum, 

 of the abdomen, by the presence of an appendix to the anterior branch of the 

 third vein J and by the middle and posterior femora being fawn-coloured instead 

 of slate-grey. — Dorsum of thorax mouse-grey, clothed with minute, appressed, 

 buff-yellow mixed with minute black hairs ; dorsum of abdomen tawny-ochraceous 

 or ochraceous, with alternate longitudinal series of light and dark 7narkings, last 



* For names and illustrations of colours, see Ridgway, ' A Nomenclature of Colors for 

 Naturalists ' (Boston : Little, Brown, & Company, 1886). 

 BULL. ENT. RES. VOL. I. PART 4, JANUARY I9II. 



