476 FAMILY: TRYPANOSOMIDiE 



development is apparently completed. T . musculi Kendall, 1906, is prob- 

 ably the same trypanosome. 



T. avicularis Wenyon, 1909, from the . zebra mouse {ArvicantJnis 

 zebrce), is of the T. lewisi type (Fig. 20 1, n). It was discovered in the 

 Sudan. 



T. acomys Wenyon, 1909, of the spiny mouse {Acomys sp.), was de- 

 scribed by the writer in the Sudan (Fig. 201, 12-13). I^ resembles 

 T. diittoni, but is somewhat larger. The complete development was not 

 studied. 



T. grosi Laveran and Pettit, 1909.- — This is a parasite of the field 

 mouse, Mus sylvaticus. It was probably first seen by Gros in Russia in 

 1845. It is of the T. lewisi type, but is not inoculable to other animals. 

 Laveran and Mesnil (1912) state that mice which had recovered from an 

 infection were found to be sometimes inoculable with Roudsky's virulent 

 strain of T. lewisi. The multiplication forms have not been seen. 



T. microti Laveran and Pettit, 1909.- — The host of this trypanosome 

 is the field vole, Microtus arvalis. It is very active and of the T. Uwisi 

 type. The reproductive stages have not been described (Fig. 201, 10). 



T. blanchardi Brumpt, 1905.^ — This trypanosome was discovered by 

 Brumpt in the dormouse, Myoxus nitela. Its dimensions and develop- 

 ment in the dormouse closely resemble those of T. lewisi in the rat. 

 Brumpt (1913) was able to transmit it by means of the flea, Ceratophyllus 

 laverani, the faeces of which contained infective trypanosomes. The 

 trypanosomes seen by Galli-Valerio (1903) in the blood of M. avellanarius, 

 and named by Blanchard T. myoxi, is possibly this species. T. eliomys 

 Fran9a, 1909, is certainly identical with T. blanchardi. 



T. evotomys Hadwen, 1912. — This trypanosome was discovered by 

 Hadwen in the field mouse, Evototnys saturatus, in Canada. It resembles 

 T. lewisi, but developmental stages were not described. 



T. peromysci Watson, 1912. — This is another trypanosome of the 

 T. lewisi type which occurs in the Canadian deer mice, Peromyscus mani- 

 culatus, P. nebracensis, and other species. The multiplication was not 

 studied. 



T. rabinowit£chi Brumpt, 1906. — This form was discovered by AVittich 

 (1881) in the hamster, Cricetus frumentarius . It closely resembles T. lewisi, 



1. T. vesper'Alionis of the bat (Pipistrellus pipistrellvs). 



2. T. megadcrmce of the Sudan bat (Megaderina frons). 

 3-4. T. hcybergi of the Congo bat (Nycteris hispida). 

 5-0). T. ialpce of the mole (Talpa europcea). 



7-8. T. nahiasi oi the rabbit. 9. T. duttoni of the mouse. 



10. T. microti of the field vole (Microtus arvalis). 



11. T. avicularis of the zebra mouse (Lemniscomys zebra). 

 12-13. T. acomys of the spiny mouse (Acomys sp.). 



14-15. T. legeri of the sloth (Tamandua tridactyla). 



