EDMONDSON — PROTOZOA OF IOWA. 



TABI^E OF CLASSIFICATION. 



Cla.s.s, SARCODINA. 



Protozoa with or without shells, with pseudopodia lobose, fin- 

 ger-like or raj'-like and sometimes anastomosing, with or without 

 axial supports. 



Sub-class, RHIZOPODA. 



With or without shells, with lobose, finger-like or anastomosing 

 pseudopodia. 



Sub-class, HP:LI0Z0A. 



With or without shells, with raj'-like pseudopodia usually with 

 axial supports. 



Sub-class, RADIOLARIA. 



With or without a skeleton but with an internal capsule. 

 Pseudopodia ray-like. Marine forms comprising over 4,000 spe- 

 cies, according to Haeckel. 



In this work on fresh water forms no further classification of 

 this group will be given. 



Order.s of Rhizopoda. 

 AMCEBIDA. 



With or without shells, with lobose pseudopodia. 

 RETICULARIIDA. 



With or without shells, with finely branching and anastomosing 

 pseudopodia. Shells usually calcareous. Mostly marine forms. 



Ordf:rs OF Heliozoa. 



APHROTHORACIDA. 



Without shells, with ray-like pseudopodia, sometimes with 

 axial supports. 



CHLAMYDOPHORIDA. 



With a gelatinous or fibrous coating. 



