396 MEDICAL ENTOMOLOGY 



species, and has so far only been recorded from the East African 

 Protectorate and Somaliland. Nothing much is known regarding its 

 habits, except that it is said to come into railway carriages. Its early 

 stages are unknown. 



Glossina tabanifonnis, Westwood. A large dark brown, dusky-winged 

 tsetse, closely resembling nigrofusca. Thorax similar to that of nigro- 

 fusca, the dark markings more or less distinct ; the abdomen also as in 

 nigrofusca. Distinguished from it by the shorter palps, and shorter hairs 

 on the posterior border of the third segment of the antenna. Distinguished 

 also from medicorum (see below) by its slightly longer palps and by the 

 structure of the harpes of the male, which are divided into four pointed 

 processes. Length, according to Austen, male 10'4 mm. ; female 10'25 

 to 10'8 mm. It is found along the Ivory and Gold Coasts, Southern 

 Nigeria and the Congo Free State. Practically nothing is known about 

 its habits or early stages. 



Glossina medicorum, Austen. A medium sized to large species, with 

 a superficial resemblance to brevipalpis. Thorax dark grey with the 

 usual dark markings. Abdomen dark brown. Distinguished from 

 brevipalpis by the wings, which are uniformly coloured in both sexes, 

 and by the structure of the harpes of the male, which have one broadly 

 lanceolate appendage. Length, according to Austen, male 9 to 10 mm. ; 

 female 10 to 10*6 mm. This species has so far only been found in West 

 Africa. Its habits and early stages are unknown. 



Glossina pallidipes, Austen. A medium sized or large species resem- 

 bling longipalpis. Thorax grey or smoke grey, with the usual dark 

 markings, but as a rule broken up or reduced. Second abdominal 

 segment light brown, with a dark brown patch at the lateral border ; 

 third to the sixth segments inclusive with broad dark brown bands, as 

 a rule ending abruptly near the centre, thus leaving a pale median 

 stripe. Length, according to Austen, male 8'5 to 10'4 mm. ; female 

 9'75 to 11'25 mm. Pallidipes can be distinguished from morsitans by 

 the fringe of hairs on the third joint of the antenna, and by the shape of 

 this joint. 



G. pallidipes is for the most part found in Eastern Africa ; Austen 

 mentions Portuguese East Africa, Nyasaland, North Eastern Rhodesia, 

 German East Africa, and the Uganda Protectorate as the approximate 

 range of its distribution. Its occurrence on the Victoria Nile, near 

 Masindi Port, in company with morsitans, has recently been reported by 

 Neave, who also states that it is to be found in Southern Nyasaland ; 

 the exact localities are not given. 



