152 MICROSCOPY FOR BEGINNERS. 



measuring -^ inch in length. The neck is not extensile 

 as in Trachelocerca, although it is the longest part of the 

 whole animal. The body, 

 without the neck, is some- 

 what spindle-shaped, taper- 

 rig. 124.-Amphil6ptti9. 



ing more rapidly towards 



the rear than towards the front. The latter or neck- 

 like part is flexible, and is turned and twisted about in 

 a way that often suggests the movements of an ele- 

 phant's trunk. The whole body is covered with fine 



cilia. 



17. PAKAM^CTOM (Fig. 125). 



This is often called the " slipper animalcule " from its 

 shape. It is frequently found in the ponds, but is espe- 

 cially abundant in vegetable infusions. The hollow 

 place resembling the opening in the slipper for the foot, 

 is the part leading to the mouth near the centre of the 

 lower surface. The whole body is cov- 

 ered with fine cilia, and sometimes a clus- 

 ter of longer, coarser cilia is noticeable on rig. 125. Para- 

 the posterior tip of the body. In the 

 writer's locality this cluster of cilia is present on all the 

 specimens ; I have never seen a Paramcecium without 

 it. This Infusorium increases rapidly by dividing into 

 two parts across the middle. Its movements are rapid. 



18. EUPL6TES (Fig. 126). 



This is one of the walking Infusoria, the cilia on the 

 flat lower surface being very large and strong. The 



