154 MICROSCOPY FOR BEGINNERS. 



20. CnfLODON (Fig. 128). 



The body is oval and flattened, the lower or flat sur- 

 face alone being ciliated. The front border is convex, 

 and rather sharply pointed at one comer, and the side 

 of the body extending from this corner to the rounded 

 posterior margin is nearly straight, while the opposite 

 side is convex. The back is smooth and naked. 

 From the pointed corner a curved line of cilia 

 extends back over the flat surface to the mouth, 

 which opens into a cone-shaped bundle of fine 

 rods visible under a high power. The ends of 

 these rods can be seen with a moderately low power, en- 

 circling the mouth like beads. The Infusorium lives 

 upon smaller Infusoria and diatoms, which it appears to 

 seize with this peculiar throat, the rods separating as the 

 food is slowly swallowed. Chttodoti is common in still 

 waters. 



21. LOXODES (Fig. 129). 



The body is quite long and narrow, the frontal border 

 being convex, with one corner rather pointed ; but on one 

 side, just below the pointed corner, is a concave space con- 

 taining a brown, sickle-shaped body lining the 

 hollow which is part of the Infusorium's throat. 

 The upper portion, or blade of the sickle, seems 

 only to stiffen that part of the cavity, the true 

 mouth being at the beginning of the short handle rig" 129. 

 of the sickle. The cilia are fine, and are on the low- Lo:s6de8 ' 

 er flat surface only. The body is flexible, often bending on 

 itself. The Infusorium is quite common in some localities. 



