TRYPANOSOMES OF INSECTIVORA, EDENTATA, ETC. 483 



lewisi in shape and dimensions. The undulations of the membrane are 

 more marked than in the rat trypanosome. Mesnil and Brimont (1908a) 

 described a trypanosome in another edentate {Choloepus didactylus) in 

 the same locality which may be identical with T. legeri. It occurred in 

 the blood in association with Endotryjmnum schaudinni (p. 485). 



(e) Trypanosomes of Carnivora. 



Trypanosoma pestanai Bettencourt and Franga, 1906. — This trypano- 

 some occurs in the badger, Meles taxus, of Portugal. It has a breadth of 

 5 to 6 microns and a total length of 30 to 32 microns. The posterior ex- 

 tremity is prolonged beyond the kinetoplast for a considerable distance, 

 and there is a flagellum 4-3 microns in length. The membrane is well 

 developed. 



A trypanosome was seen by Fehlandt (1911) in an otter in Tanganyika, 

 and one in a lion by Week (1914) in East Africa. In both these cases it is 

 supposed the trypanosomes were of the pathogenic forms of Africa. 



(/) Trypanosomes of Monkeys. 



Trypanosoma prowazeki Berenberg-Gossler, 1908. — This trypanosome 

 was discovered by Berenberg-Gossler in a monkey {Brachyurus calvus) 

 from the Amazon district (Fig. 203, i). It measured (flagellum included) 

 21 microns in length by 2 microns in breadth. The flagellum was 7 microns 

 long. Laveran and Mesnil (1912) regard it as allied to T. cruzi. 



T. minasense Chagas, 1909. — This trypanosoma, first seen by Chagas, 

 appears to be a common parasite of marmosets, Hapale penicillata and 

 H.jacchus, of South America (Fig. 203, 2). The body of the trypanosome 

 measures 30 to 35 microns in length, and there is a free flagellum 8 to 10 

 microns long. The breadth is 4 to 6 microns. 



T. vickersae Brumpt, 1909. — This form was discovered by Brumpt 

 (19196) in Macacus cynomolgus (Fig. 203, 4-5). Its length is 20 to 22 

 microns, of which the flagellum occupies about 8 microns. In general 

 structure and pathogenicity it resembles T. cruzi. It was inoculable to 

 M. cynomolgus and to other monkeys, M. rhesus and M. sinicus, as also 

 to rats, mice, guinea-pigs, dogs, and marmosets. The same trypanosome 

 appears to have been discovered in a M. rhesus at the Rockefeller Institute 

 by Terry (1911), who proposed to name it T. rhesi. 



A very similar, if not identical, trypanosome which bears some resem- 

 blance to the established forms of T. lewisi was found in M. sinicus in 

 Algiers by Et. Sergent (1921). The trypanosome was not seen on direct 

 blood examination, but was obtained in culture in N.N.N, medium, in 

 which it grew very readily. 



T. lesourdi Leger and Porry, 1918. — This trypanosome occurs in the 



