Fh;. 70. — Pa?-an/arciiini cmidutun}. 

 A, the living animal from the ventral aspect, showing the covering of cilia, the 

 buccal groove (to the right) ending posteriorly in the mouth {i?ttk) and gullet 

 {g-ul) ; several food vacuoles {/. vac), and the two contractile vacuoles (c. vac). 



