32 G. brevipalpis as a Carrier of Trypanosome Disease. 



with T. pecorum, and not with T. caprce, it is probable that no complete 

 development of the latter had taken place. 



Conclusion. 



G. brevipalpis is capable of acting as a carrier of T. caprce. 



General Conclusion. 



G. brevipalpis is capable of acting as a carrier of T. brucei vel rhoclesiense, 

 T. brucei, Zululand, 1913, T. pecorum, and T. caprce.- 



DESCRIPTION" OF PLATE. 

 (See also p. 27 above.) 



Plate 1, Trypanosoma brucei vel rhodesiense, the trypanosome causing disease in man 



in Nyasaland. 



Figs. 1 and 2, intestinal forms. 



Fig. 3, intestinal form after entering salivary glands. 

 Figs. 4-10, crithidial forms. 



Figs. 11 and 12, groups of parasites in the encysted stage. 

 Figs. 13-17, encysted forms opening out. 



Figs. 18 and 19, fully developed salivary-gland forms. This constitutes the end of the 

 cycle of development, which ends where it began, in the " blood form " of the 

 vertebrate host. 



Stained Giemsa. x 2000. 



