^m ) 



17 



Franca (C.)- L'Insecte Transmetteur de Leptomonas davidi (Note 

 pr61iminaire).— 5i<ZZ. Soc. Path. ExoL, Paris, xii, no. 8, 8th October 

 1919, pp. 513-514. 



The discovery is recorded of Leptomonas davidi in a Hemipteron, 

 Stenocephalus agilis, found on spurge {Euphorbia segetalis). Many 

 of the bugs w^ere found to be parasitised by a Dipterous larva, identified 

 by Roubaud as that of a Muscid belonging to the Ooypterinae 

 or Gymnosominae, which, when parasitising an infected individual of 

 S. agilis, was also found to harbour Leptomonas. 



VandenBranden(F.). Action de la Comblnaison Atoxyl, Em6tique, 

 Tryparosan, sur le Trypanosoma congolense.—Bull. Soc. Path. 

 ExoL, Paris, xii, no. 8, 8th October 1919, pp. 514-517. 



An outbreak of trypanosomiasis is recorded among cattle at Leopold- 

 ville, following the introduction of a herd of goats from the Uppej 

 Congo. The parasite concerned was Trypanosotna congolense and 

 the vector was without doubt Stotnoxys calcitrans. An intensive 

 treatment of atoxyl emetic and tryparosan had a beneficial effeet in 

 the case of the cattle, though it did not definitely eliminate the 

 trj^panosomes from the blood. 



Bequaert (J.). L' Ornithodorus moubata dans le Nord-Est du 

 Congo Beige. — Bidl. Soc. Path. Exot., Paris, xii, no. 8, 8th October 

 1919, pp. 517-520. 



Commenting upon a recent paper on the occurrence of Ornithodorus 

 moubata in the Belgian Congo \R. A. E., B, vii, 151] the author remarks 

 that the impression is there conveyed that this tick has not yet appeared 

 in Upper Ituri ; as a matter of fact it has been known in that region 

 for many years. The topographical occurrence of 0. moubata within 

 the region is discussed. It is pointed out that while its presence in 

 localities outside the Equatorial Forest is readily understandable 

 in view of its affinity for dryness, its occurrence in other localities 

 in the depth of the forest appears at a glance to be abnormal ; this 

 is however explained by the fact that in these locahties there are 

 Negro-Arabic settlements, and large areas of the forest have been 

 cleared. In fact the conditions are exactly similar to those prevailing 

 in parts of the Eastern Province, and this distribution of the tick 

 confirms Rodhain's view of it as a drought-loving species. 



There is very httle doubt but that this tick is indigenous to Africa, 

 since it has never been found in any other part of the world. At 

 first, however, it was very localised, and its present distribution is 

 due to continual caravan travelhng. In 1854, when its presence 

 was first recorded in Angola by Livingstone, both the tick and relapsing 

 fever were unknown in South Africa and Rhodesia. However, in 

 the plateau of Walendu, between the basin of the Ituri and Lake 

 Albert, the tick is commonly found in all the native villages, the 

 natives having acquired complete inmiunity to the fever, although 

 immigrants are readily affected by it. It is unlikely that such perfect 

 immunity has been acquired within a short period, and it is the 

 author's opinion that this region was one of the primitive indigenous 

 centres where 0. moubata existed before the arrival of Arab*; or 

 Europeans in Central Africa. 



(650) Wt.P192i;U4. 1,500. 2 20. B.&F.Ltd. Gp. r/14.. A 



