12 



the shining ochreous or reddish-ochreous coloration of the abdomen, 

 the upper side of which generally exhibits traces of widely interrupted, 

 dark, transverse bands, the dusky tint of the posterior tarsi, and, in 

 the male, certain peculiarities of the genital appendages. 



The first example of this species (a $) submitted to Professor New- 

 stead for identification was collected by District Commissioner R. P. 

 Filleul, on 17th March 1912, at Alexandra, Gorha, Jubaland, in Kenya 

 Colony. A little later 22 additional specimens (8 #, 14 $?) of 

 this fly, taken in the same district, were forwarded by Mr. Filleul. 



In February of the same year (1912), five specimens (2 <$<$, 3 $$) 

 of G. austeni, easily recognisable, in spite of their small size, by the 

 shining strawberry colour of the upper surface of the abdomen, were 

 also captured by Dr. S. A. Neave at Voi and in the vicinity of Witu, 

 Kenya Colony. In the colony in question, according to Dr. Neave, 

 G. austeni appears to be confined to the coastal belt, where it is fairly 

 widely distributed. 



In 1913 Professor Newstead recorded the receipt of 2 & and 10 ?? 

 of- G. austeni, Newst., forwarded by Dr. Morstatt, of Amani, German 

 East Africa (now Tanganyika Territory), and collected in January 

 and February of that year, at Nyussi, Tanga District, being the first 

 examples of this species to be recognised from Tanganyika Territory. 1 

 Since then G. austeni has been reported as likewise occurring in Portu- 

 guese East Africa and (under the synonym G. brandoni, Chubb 30) 

 in Zululand. 



G. ziemanni, Griinberg (600). The following is a resume of the 

 description of this species, published by its author in 1912. 



Total length (including proboscis) 10-5-11 -5 mm. ; including wings, 

 14 mm. 



Ground colour deep blackish-brown, the pollinose covering dirty 

 ashen-grey, tinged with brown. The head shows the same brownish 

 ashen-grey pollinosity as does the entire body, this pollinose covering 

 being visible everywhere except on the deep blackish-brown frontal 

 stripe. The clypeus and antennae are likewise dark brown, except 

 that the third segment of the latter has a light reddish tint ; the fringe 

 of black hair on this segment is short, its length being equal at most 

 to one-sixth of the breadth of the segment. The arista is of the same 

 colour as the third segment, and the branched hairs are black. The 

 proboscis is dark brown, the palpi, in consequence of the thick covering 

 of bristles, appearing black. 



The dorsum of the thorax has a dense, brownish ashen-grey, pollinose 

 covering, the pleurae exhibiting paler ashen-grey spots, or being 

 definitely ashen-grey without a brownish tint ; the blackish-brown 

 stripes and spots on the dorsum are arranged as in G. palpalis. The 

 scutellum has a fairly intense metallic sheen of a violet tint, very 

 distinctly visible through the dark pollinose covering, a similar sheen 

 being also seen on the basal portion of the wings and between the 

 veins ; the two lateral black scutellar spots are very indistinct. 



On the abdomen the dark ashen-grey pollinose covering is not so 

 pronounced as that on the thorax. The third to the sixth segments 

 inclusive each exhibit a sharply defined, dead black, interrupted 

 transverse band, these markings being distinctly separated from each 

 other as in G. tachinoides or G. pallidipes, but owing to the dark 

 ground colour much less conspicuous. Viewed at a low angle from 



1 We now know that all Tsetse-flies recorded from what was formerly German 

 East Africa under the name of G. tachinoides, Westw., were in reality G. austeni, 

 Newst. 



