TAB ANUS FROM THE ANGLO-EGYPTIAX SUDAN. 293 



bufF-yellow hairs) on each side of middle line, between admedian stripe and 

 dark patch near lateral margin ; extreme lateral margins of first six segments 

 clothed with whitish hair ; hind margins of fifth and sixth segments 

 clothed for most part with yellowish hair ; sixth and seventh segments, 

 except posterior and lateral margins of former, clothed with black hair ; 

 venter ochraceous-biiff, clothed with minute, appressed, straw-yellow hairs, 

 hind margins of second to sixth segments inclusive cream-coloured or 

 whitish, seventh segment entirely or for most part dark greyish-brown, 

 clothed with erect black hair, sixth segment also with some black hairs in 

 centre, fifth and sixth segments sometimes more or less infuscated, especially 

 towards posterior and lateral margins. Squamce isabella-coloured, with buff 

 margins. Halteres ochraceous-buff, tips of knobs cream-coloured. Legs : 

 coxse olive-grey or smoke-grey, clothed with whitish hair ; rest of front legs 

 black, except proximal halves, or rather less, of tibiae, which are cream- 

 coloured and clothed with minute, appressed, pale yellowish hairs ; outer 

 side of front femora greyish pollinose, clothed with fine yellowish hair ; 

 middle and hind femora fawn-coloured, clothed with pale yellowish hair ? 

 middle and hind tibi?e buff, brownish at tips, clothed partly with black and 

 partly with yellowish hair ; middle and hind tarsi dark brown, darker 

 towards distal extremities. 



Anglo-Egyptian Sudan : type and two other specimens from Khor 

 Arbat, Red Sea Hills, 12. iv. 1910 {H. H. King) ; an additional specimen 

 bred from larva taken at same time and place (i7. H. King). 



Type in the British Museum (Natural History) . 



Mr. H. H. King, in whose honour this species is named, and whose 

 description of its life-history will be found on pp. 269-274, states that he took 

 seven specimens of T. kingi ovipositing on rocks overhanging a shallow, 

 brackish stream, rippling over rocks and stones, and that two more were 

 caught on camels. 



Tahanus kingi is allied to an at present undescribed species of Tabanus, 

 of which specimens from Abyssinia are contained in the British Museum 

 collection. The Abyssinian species, however, which agrees with T. kingi in 

 the shape of its frontal callus and in the anterior branch of the third vein 

 being bent at an angle and provided with an appendix, is distinguished from 

 it, at any rate in the female sex, by : — the frontal callus being dark mummy- 

 brown instead of black or clove-brown ; by the much darker colour of the 

 dorsal surface of the body ; by the dorsum of the thorax being distinctly 

 striped, and clothed mainly with black instead of with buff -yellow hair ; by 

 the series of pale marks on the dorsum of the abdomen, outside the ad- 

 median stripes, taking the form of clearly defined light grey spots, which 

 are distinctly ovate in shape ; and by the ground-colour of all the femora, 

 and not merely of those of the front legs, being black. 



