MASTIGOPHORA 



385 



flagellum. The nucleus lies near the center of the cell. It is oval 

 or somewhat irregular in outline and usually occupies the who4e 

 width of the cell. Near the blunt posterior end of the cell is a 



A 



FIG. 154. Glossinamorsitaus. A, Magnified. (After Dofiein.} B, Sketch showing 

 natural size. (From Dofiein after Blanchard.} 



spherical granule, the blepharoplast. Near this the flagellum 

 originates and it extends forward along the convex border of the 

 cell, which is drawn out into a thin undulating membrane, and 

 A B 



V 



FIG. 155. Glossina morsitaus-, lateral view of the resting fly. A, Before feeding. 

 B, After sucking blood. (From Doflein after Austen.} 



extends beyond the anterior end of the cell as a free flagellum. 

 The cytoplasm anterior to the nucleus often contains many coarse 

 granules. The general shape of the trypanosome as seen in the 



25 



