118 



MICROSCOPY FOR BEGINNERS. 



freely, and star-shaped, with several conical, acute, 

 straight, or curved pseudopodia 

 radiating from the spherical cen- 

 tral body. The form changes 

 very slowly. A. radiosa. 

 3. Body irregular in shape; pseudo- 

 podia usually few, short, thick, 

 and directed forward ; posterior Fig. 92. Amceba pr6- 

 portion of the body with a vil- 

 lous or velvet -like patch of very short, colorless 

 pseudopodia. A. villosa. 



2. VAMPYRELLA LATERI'TIA (Fig. 93). 

 A red or orange colored, Amoeba-like creature with 

 this name is not uncommonly found in early spring 

 among thick growths of Spirogyra, for which it has a 

 special fondness. It does not very quickly nor frequent- 

 ly change its shape, yet its movements are quite rapid. 

 Its pseudopodia are colorless and transparent, being 

 formed by a short outward flow of the 

 colorless central body substance, the red 

 color being confined chiefly to the sur- 

 face. It also has .short, fine rays like 

 threads, and many pin-like projections, 

 Fig. 93.-varapyreiia by which, in connection with its color, 

 Vampyrella may be easily recognized. 

 These pin-like rays consist of a short, fine stem with a 

 little bulb on the end, so that each looks very much 

 like a pin with a big head. They may appear on all 



