148 



the north-west the region is surrounded by a plain which constitutes 

 a fly-zone. It is estimated that nearly half the animals destined for 

 pubhc consumption at Kigoma, having traversed this fly-zone, arrive 

 suffering from trypanosomiasis of either of two forms due to 

 Trypanosoma cazalhoui or T. congolense. On the northern side 

 Glossina morsitans is abundant and caused considerable loss among, 

 cattle in 1917 ; this is always a danger to the north-east of Urundi also^ 

 where conditions are favourable for its existence. The greatest danger 

 however lies in the south, where the geographical distribution of 

 G. morsitans is not well known. Along the shores of Lake Tanganyika,. 

 G. fusca, G. palpalis and G. morsitans all occur, but as there are but 

 few cattle in this plain, the danger there is not very great. A map of 

 the district shows the distribution of tsetse-fly in the Protectorate of 

 Urundi-Ruanda. 



It is estimated also that about one-haLf the animals exported from 

 Urundi are likely to be suiiering from some form of piroplasmosis ; 

 e.g., several animals at Gitega have been diagnosed as suffering from 

 African Coast fever. The Watuzi cattle are particularly susceptible 

 to piroplasmosis, for an animal that has acquired a certain local 

 immunity by having recovered from the disease is not resistant to 

 the attacks of ticks from another district. Ticks are responsible 

 for a considerable depreciation in the value of hides from this region, 

 and especially attack the cattle in concentration stations and along 

 the routes to Kigoma. Those most frequently occurring belong to 

 the genera Rhipicephalus, Hyalomma, Amblyomma, Margaropus 

 (Boophilus), and Haemaphysalis, the latter conveying piroplasmosis 

 to dogs. 



Skin diseases, such as mange, are fairly common, but a much more 

 serious disease, which has recently been observed in the cattle at Nyanza, 

 is contagious dermatitis due to Demodex folliculorum transmitting 

 Dermatophilus congolense. The specific treatment for this disease is 

 a 10 per cent, carbohc ointment. Another form of dermatitis, attacking 

 goats and sheep, and always locahsed about the mouth, nose and 

 occasionally the eyes, which sometimes causes the death of the animal, 

 is thought to be due to the ingestion of plants on which certain insects 

 have deposited a viscous substance. 



Van Saceghem (E,.). La Paste du Cheval ou " Horse Sickness " au 

 Congo Beige. — Bull. Agric. Congo Beige, Brussels, x, no. 1-4, 

 March-December, 1919, pp. 162-174, 6 figs. [Received 19th 

 June 1920.] 



The information contained in this paper has already been noticed 

 [R.A.E., B, V, 161]. 



Matemos la Mosca de Invierno. [Campaign against Musca domestica.] 

 — Anales Soc. Rural Argentina, Buenos Aires, liv, no. 9, loth May 

 1920, pp. 371-378, 7 figs. 



This paper is a popular appeal to the general public of Argentina to 

 assist in the campaign against the house-fly, Mnsva domestica. The 

 dangers of disease carried by the fly are graphically pointed out in 



