IN THE PROVINCE OF MOZAMBIQUE, EAST AFRICA. 41 



beeu through that portiou of the district kuown as Maganja da Costa, and 

 informs nie that in nearly all parts of this region G. morsitans is to be found. I 

 have examined his specimens, and find that he has both G. morsitans and 

 G. pallidipes from Maganja. He also reports G. hrevipalpis* from one locality 

 in Maganja. Austen has belts located near Chinde, at the mouth of the 

 Zambesi river, and also at the mouth of the Shire river. These no longer exist. 

 The coastal region is also quite free from fly. Cattle trypanosomiasis was 

 present in herds at Mopea on the Zambesi in 1908-9, and also on the southern 

 banks of the Zambesi to the westward, toward the Tete district, but a careful 

 search in the adjoining regions failed to disclose any fly. The natives were quite 

 ignorant of it. All the facts went to indicate that the disease had been intro- 

 duced in cattle brought from Nyasaland and had then been spread through the 

 herds by local biting flies such as Stomoxys or Tabanidae. 



The Tete district, while not having as many fly-belts as one would be led to 

 expect, has several well-known fly-areas in the central and northern parts. The 

 western portion seems to be fairly free from fly. Drivers who have brought 

 cattle across this portion, in the vicinity of Zumbo, from North Eastern Rhodesia 

 into Southern Rhodesia, report that there is no fly vmtil they arrive at the 

 escarj)ment in Southern Rhodesia, some distance south of the Tete boundary, 

 where the land suddenly rises to a higher level. Here in the kloofs fly is to 

 be fovmd. 



Dr. Sant'Anna has also recently visited the Tete district, and kindly gave us 

 his notes on the fly-belts \\'hich he found. A belt of G. morsitans exists on the 

 road leading to the north from Tete to Villa Coutinho, near and north of the 

 course of the Inyamandzi river, an affluent of the Revugwe river. A second belt 

 was found near the Liugove river, another affluent of the Revugwe river. 

 A third occurs about six hours south of Inyamandzi, while a fourth occurs two 

 hours west of a place known as Muchina, in the same general region. 



The district belonging to the Companhia de Mocambique has several 

 fly-belts. In the northern part there is apparently a considerable amount of fly. 

 While the south bank of the Zambesi river is itself quite clean, tsetse probably 

 occurs at several places some distance inland. 'J'rypanosomiasis has occurred 

 among cattle along the river in the vicinity of Sena, but no fly is present at 

 least within a considerable distance of the river, where the cattle graze. At 

 Lacerdonia there is fly one hour's distance south from the river. About 

 half-way between the Zambesi and Beira, toward the coast, is a place known as 

 Chirugoma, in the vicinity of which are fly-belts of both G. morsitans and 

 G. brevipalpis. 



Twenty to twenty-five miles from Beira, near the railway line, is a belt of 

 morsitans ; another belt occurs about thirty miles south of Sofala ; a third 

 is known to occur near the Rhodesian boundary in the vicinity of Melsetter ; 



'•' [In his mauuscript the author refers to this species under the name of G.fusca ; but it is 

 now recognised that the large East African Glosshia, to which this name was formerly applied, 

 is specifically distinct from the purely western G. fused, and it has been described as G. brevi- 

 pidpis, Newstead. In the British Museum there are specimens of this species taken at Bamboo 

 Creek, on the Beira Railway, by Mr. L. E. W. Bevan, of Salisbury, Rhodesia ; this record has 

 beeu added to the author's map. — Ed.] 



