PLATE 111. 



Various Forms of Malarial Parasites (Thayer and Hewetson). Figs. 1-10 

 inclusive, tertian organisms ; Figs. 11-17 inclusive, quartan organisms ; Figs. 

 18-27 inclusive, estivo-autumnal organisms. 



Fig. 1. Young hyaline form; 2, hyaline form with beginning pigmenta- 

 tion ; 3, pigmented form ; 4, full-grown pigmented form ; 5, 6, 7, 8, segmenting 

 forms ; 9, mature pigmented form ; 10, flagellate form. 



Fig. 11. Young hyaline form ; 12, 13, pigmented forms ; 14, fully developed 

 form ; 15, 16, segmenting forms ; 17, flagellate form. 



Figs. 18, 19, 20. Ring-like and cross-like hyaline forms; 21, 22, pigmented 

 forms ; 23, 24, segmenting forms : 'jr>, _!(>, i!7, crescents. 



