140 MICROSCOPY FOR BEGINNERS. 



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



k. Cilia fine, numerous (m). 



1. Body more or less circular in outline. Euplotes, 

 IS. 



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

 19. 



m. Month followed by a conical tube of rods. Chi- 

 lodon, 20. 



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

 brane. Loxodes, 21. 



1. DENDKOMONAS (Fig. 106). 



The stem is many times divided into numerous 

 branches, and the branches themselves are also much 

 divided, with one small Infusorium at the end of each. 

 The whole has a beautiful but colorless 

 tree-like appearance, the stem being often 

 found attached to Ceratophyllum. The 

 animals 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 by 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 recognized with a good one-inch 

 objective. 



2. CARCHESIUM (Fig. 107). 

 The stem, attached to plants or other submerged 



