342 



their gut. These are of two kinds, possibly more, 

 (i) T. grayi $ very slender and very long compressed 

 nucleus ; blepharoplast anterior, free flagellum long 

 (Fig. 108). ? bulky, protoplasm containing many 

 staining granules (chromidia), nucleus oval or round, 

 blepharoplast variable in situation, free flagellum very 

 short. Young and indifferent forms, many of the 



Fig. 1 08 (i) T. gambiense, $ ; (2) T. gambiense, ? ; 



(3) T. gambiense (indifferent form); (4) T. grayi, encysted stage ; 



(5) T- g ra yi> $ i (6) $ ; (7) indifferent ; (8) dividing form 



latter being round and also containing chromidia. 

 Dividing forms are characterized by the fact that one is 

 much larger than-, the other ; the smaller having the 

 blepharoplast anterior to the nucleus, while the larger 

 has it posterior. 



