586 



FAMILY: TRYPANOSOMID^ 



s^nciccsc^ 



Fig. 237. — Trypanosoma vittatce, Parasite of the Ceylon Tortoise, Emyda 

 vittata. AND THE Leech, Poeeilobdella granulosum ( x 1,600). (After Robertson, 

 1909.) 



1-4. T. vittatce in blood of tortoise. 



5-6. Division stages of rounded -off trypanosome in intestine of leech. 



7. One of the products of division. 



8. Elongation of body to form crithidia stage. 

 9-10. Division of elongating forms. 



11-13. Tryi^anosome forms evolved from the crithidia forms 



