infus6ria. 



149 



k. Cilia large, few, scattered (/). 



k. Cilia fine, numerous (ni). 



I. Body more or less circular in outline. Eupldtes, 18. 



/. Body more or less oblong in outline. Stylonychia, 

 19. 



m. Mouth followed by a conical tube of rods. CM- 

 lodon, 20. 



m. Mouth followed by a brown, sickle-shaped mem- 

 brane. Loxddes, 21. 



I. Dendr6monas .(Fig- lot). 



The stem is many times divided into numerous 

 branches, and the branches themselves are also much 

 divided, with one 

 small Infusorium, of- 

 ten two, at the end 

 of each. The whole 

 has a beautiful, but 

 colorless tree-like ap- 

 pearance, the stem 

 being often found 

 attached to Cerato- 

 phyllum. The ani- 

 mals have each two 

 flagella, but they are 

 visible only to a high- 

 power objective. 



There is no special 

 mouth. A particle, of 

 food dashed down 6y the flagella against any part of 

 the body sinks into its soft side and is thus swallowed 

 without a throat. The whole colony is often more 

 branched than is shown in the figure. It can be recog- 

 nized with a good one-inch objective. 



Fig. 106. — Dendrdmonas. 



