ILLUSTRATIONS. 



(From water-color drawings by Teodosio S. Espinosa.) 



Plate I. 



The figures in Plate I were drawn with the camera lucida at a uniform 

 magnification of 2,000 diameters. 



Fig. 1. Motile form of Trypanosoma evansi from the blood of an infected 

 guinea pig. 



2. A trypanosome coiling up to form a schizont ("latent body"), from 



the spleen of an infected guinea pig. 



3. A schizont ("latent body") with the flagellum still attached, from 



the spleen of an infected guinea pig. 



4. A schizont ("latent body") of Trypanosoma evansi, from the spleen 



of an infected guinea pig. 

 Figs. 5 to 10. Schizonts showing successive stages of division of the 

 blepharoplast and nucleus, from the spleen of an infected guinea 



pig- 

 Fig. 11. A schizont showing the beginning of the formation of the mero- 

 zoites, from the spleen of an infected guinea pig. 

 12. A mature schizocyst containing 8 merozoites (semidiagrammatic), 

 from the spleen of an infected guinea pig. 



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