. 



PART II. 



CHAPTEE VII. 



SUB-KINGDOM I. PROTOZOA. 



SUB - KINGDOM I. PROTOZOA. Animal simple or composite, 

 generally of very minute size, composed of a structureless 01* 

 slightly differentiated, jelly -lifce, albuminoid substance (termed 

 " sarcode "), showing no composition out of definite parts or 

 segments, having no definite body-cavity, presenting no traces of 

 a nervous system, and having either no alimentary apparatus, 

 or but a very rudimentary one. 



TABLE OF THE DIVISIONS OF THE PROTOZOA. 



CLASS A. GREGARINID^E. Parasitic Protozoa, which are destitute of a 

 mouth, and do not possess the power of emitting processes of their body- 

 substance (pseud opodia). 



CLASS B. RHIZOPODA. Protozoa, which are destitute of a mouth, and 

 have the power of emitting extensile and contractile processes of the 

 body-substance (pseudopodia). 



Order 1. Monera. Ex. Protogenes. 

 Order 2. Amcebea. Ex. Amoeba. 

 Order 3. Foraminifera. Ex. Nummulites. 

 Order 4. Radiolaria. Ex. Haliomma. 

 Order 5. Spongida. Ex. Spongilla. 



CLASS C. INFUSORIA (Infusorian Animalcules). Protozoa mostly 

 with a mouth, and rudimentary digestive canal ; destitute of the power 

 of emitting pseudopodia ; furnished with vibratile cilia or contractile 

 filaments ; the body usually with a distinct cuticle covering a layer of 

 firm sarcode. 



VOL. I. ' G 



