183 



the chief results of infection have been the loss of resistance to other 

 forms of disease, such as chills, mange, abortion in the case of females, 

 and general debility and unfitness for work. The vicinity of infected 

 camels is very dangerous to horses and mules, in which the progress 

 of the disease is very rapid and nearly always ends fatally. Through- 

 out Algeria as a whole some 10 per cent, of the camels have been 

 found to be suffering from trypanosomiasis in the acute form, the 

 proportion sometimes being as high as one in three in certain regions 

 and periods, while the birt.h-rate is diminishmg to an alarming degree. 



Sergent (Ed. & Et.) & DoNATiEN (A). Deuxieme Note sur I'H^redit^ 

 de rinfection et de I'lmmunite dans la Trypanosomiase des 

 Dromadaires. — Bull. Soc. Path. Exot., Paris, xiii, no. 7, 7th July 

 1920, pp. 525-527. 



Experiments on camels artificially inoculated with Trijpanosoma 

 berbermn have led to the conclusion that the females, when suffering 

 from the acute stage of debab, transmit the disease to the foetus, 

 which dies in consequence. In the chronic phase, which is character- 

 ised by a weak infection and relative immunity, they do not transmit 

 to their offspring either infection or immunity. 



Tejera (E.). Un nouveau Flagelle de Rhodnius prolixus, Trypanosoma 

 (ou Crithidia) rangeli, n. sp. — Bull. Soc. Path. Exot., Paris, xiii, 

 no. 7, 7th July 1920, pp. 527-530, 2 figs. 



A new flagellate is described from the intestinal tract of Rhodnius 

 frolixus in Venezuela, which is distinct from Trypanosoma cruzi, 

 and to which the name T. rangeli is given, though it is not quite certain 

 whether it should be considered as belonging to this genus or to Crithidia. 

 The flagellate is found in the nymphal as well as the adult form of this 

 bug. Insects reared in the laboratory are apparently immune from 

 the parasite. Individuals that are left without food for more than 

 two months seem to become free from infection. It is proposed to 

 investigate the possibility of the development of this flagellate in 

 vertebrates. 



MoNTPELLiER (J.), Degouillon & Lacroix (A.). La Gale filarienne 

 est-elle bien une Manifestation de Volvulose? — Bull. Soc. Path. 

 Exot., Paris, xiii, no. 7, 7th July 1920, pp. 530-535. 



In consequence of some discussion that has arisen concerning the 

 possible identity of the embryo of Onclwcerca volvulus with that 

 producing filarial mange, the authors have made a comparison between 

 the characteristics of the microfilaria studied by them and the enibryos 

 of filaria previously described as infesting man. The conclusion has 

 been reached that the microfilaria of 0. volvulus and those taken from 

 the skin of natives suffering from filarial mange show such similarity 

 of character that it is morphologically impossible to differentiate them, 

 and that this microfilaria differs distinctly from the various embryos 

 of adult filaria previously described as infesting man. 



