GUIDE TO THE COEAL GALLERY. 



High WaU 



Case 



E. end of 



Gallery. 



LOBOSA. 



The LoBOSA, or Gymnomyxa with lobose pseudopods, may be 

 without shells, as Amala (see Plate III. and Model 1 in the Case), 

 or they may be enclosed in a shell, as, for example, Diffliigia 

 piriformis (Model 2) and Difflugia acuminata (Plate III. in Case), 

 in both of which the shell is composed of cemented sand-grains. 

 The shelled forms creep about with the shell uppermost and with 



Fig. 2. 



Actinophrys sol, the Common Sun-Animalcule. The large globule 

 projecting from the surface is a contractile vacuole. Magnified 

 500 diameters. (After Leidy.) 



the pseudopods emerging from the aperture below. The Lobosa 

 live, for the most part, in fresh water, damp moss, etc. 



The Mycetozoa, or Fungus Axkl^ls, which may be con- 

 veniently referred to here, are, by some naturalists, regarded as 

 vegetable organisms. In dealing with the lowest organisms, it is 

 often difficult to determine definitely their true position in the 

 kingdom of life, whether they are to be regarded as members of the 



