MASTIGOPHORA 



399 



FIG. 170. Lamblia intestinalis. A, Ventral aspect; B, lateral view; C, in posi- 

 tion on epithelium; D, the same enlarged. (From Doflein after Grassi and 'Sckevria- 

 kof.) 



A B C 



s 



FIG. 171. Trimastigamceba philippinensis. A, Early stage of division of the 

 nucleus. The polar caps are still united by a bridge. The equatorial plate has 

 formed. B, Ordinary cyst. C, Vegetative form showing the nucleus and a second 

 chromatin granule (split off from it?). D, Flagellated form showing remains of the 

 rhizoplast between the nucleus and the basal granules. , Flagellated form with 

 pseudopodia. (After Whitmore.} 



