20 



are not or scarcely at all infuscated in the present species), and in 

 the $ by well-marked differences in the hypopygium and hectors." 



" Up to the present time this species of Tsetse has been found only 

 in West Africa (Liberia, Gold Coast and Southern Nigeria) " (Austen, 

 op. cit.). G. medicorum is now also known to occur in the Ivory Coast 

 (Bouet and Roubaud. 13) and Ashanti. 



Glossina longipennis, Corti. This species, originally described in 

 1895, is characterised by Austen as : " Resembling G. brevipalpis, 

 Newst., in size and general appearance, but distinguished by the 

 greater width of the front in both sexes, by the ocellar spot being 

 dark brown or clove-brown, and conspicuous, instead of merely light 

 brownish and inconspicuous, by the proboscis bulb having a sharply 

 denned brown or dark brown tip instead of being uniformly pale 

 yellow (at any rate except on the upper margins), and by the dorsum 

 of the thorax exhibiting, in addition to a pair of admedian spots on the 

 suture itself, four sharply denned, dark brown, more or less oval or 

 elongate spots, arranged in a parallelogram, two in front of and two 

 behind the transverse suture." 



Of the abdomen, Austen writes : " Dorsum ochraceous-buff, 

 ochraceous, or tawny-ochraceous, longer hair at base of second segment 

 entirely golden-yellow, third to sixth segments inclusive, each . . . 

 with a dark brown more or less lunate mark on each side at base, 

 widely distant from median line but not always extending quite into 

 basal angle, seventh segment and posterior angles of third to sixth 

 segments, inclusive, yellowish-grey pollinose." 



According to Austen, " Glossina longipennis is an East African 

 species, the range of which is apparently somewhat restricted, since 

 up to the present time [1911] this Tsetse-fly has been recorded only 

 from Somaliland and the East Africa Protectorate [Kenya Colony]. 

 Since, however, it is found on the line of the Uganda Railway, it is 

 possible that its area also extends into German East Africa [Tanganyika 

 Territory], while to the north it perhaps occurs, as Dr. Andrew Balfour 

 has pointed out, in Southern Abyssinia. Towards its southern 

 boundary the range of G. longipennis overlaps that of G. brevipalpis, 

 Newst." Dr. S. A. Neave states that G. longipennis is the characteristic 

 Tsetse of dry and desert countries, and is confined to north-eastern 

 Africa. It is widely distributed in the low-lying and arid regions in 

 the east and north of Kenya Colony, and very probably also exists in 

 that part of the Uganda Protectorate which is situate to the south-west 

 and west of Lake Rudolf. It appears to be absent from the littoral 

 belt, where the climate is doubtless too humid. 



The known range of this Tsetse-fly has been defined more precisely 

 by H. H. King and the late Dr. A. J. Chalmers, who state that it 

 extends from about 6 N. Lat. to 4 S. Lat., and from 33 to 47 E. Long. 

 The area comprised within these limits includes Kenya Colony, the 

 south and west of Italian Somaliland, the southern region of Abyssinia, 

 and the south-eastern portion of the Egyptian Sudan. 



Additional Species. 



The two following species, both of which have been described since 

 the appearance of the " Handbook," cannot as yet be classified according 

 to Austen's system, and it therefore seems better to characterise them 

 briefly, without attempting in either case to assign the species to a 

 definite Group. 



