Figure Page 



4-12. Electronmicrograph of Leishmania mexicana 



ainastigotes in large vesicles wfthin a macrophage 



cell of a hamster infected by the bite of a 



f ema 1 e Lutzomyia diabol ica 189 



4-13. Electronmicrograph of saggital and transverse 

 sections of Leishmania mexicana amastigotes in 

 macrophage cells of an infected hamster 192 



4-14. Electronmicrograph of Leishmania mexicana 

 promastigotes in the abdominal midgut of an 

 infected Lutzomyia diabol ica female 193 



4-15. Electronmicrograph of Leishmania mexicana 



promastigotes in the cardia (thoracic midgut) of 



an infected Lutzomyia diabol ica female 195 



4-16. Lesion on the ear of a hamster approximately two 

 weeks after it was bitten by a female Lutzomyia 

 diabol ica that was experimentally infected with 

 Leishmania mexicana 199 



xn i 



