EDMONDSON — PROTOZOA OF IOWA. 7 



Cyphoderia Schlum. 

 Euglypha Ehr. 

 Assidina Duj. 

 Trinema Duj. 

 '^Campasais Leidy. 

 Shell as in Cyphoderia but with lateral processes on the fundus. 

 Pseudopodia delicate and branched. 



Families and Genera of Reticulariida. 



Gromid^. 



Shell sac-like, membranous. Pseudopodia extending from an 

 opening in one end of the shell, long, branching and anastomosing. 

 Fresh water forms of the order are most likely to belong to this 

 family, therefore it is introduced here. 

 '^Groniia Duj. 



Pseudopodia forming a network about the shell. 

 '^Microgromia Hertwig. 



Shell flask-shaped, not filled by the body. Often forming 

 colonies. 



■"^Psendodijfiicgia Schlum. 



Shell chitinous, to which foreign materials are added. Pseud- 

 opodia delicate and branched. 



Genera of Aphrothoracida. 



Note. — Family names have not generaUy been used in the classification of Heliozoa. 



Vampyrella Cienk. 

 Adinophrys Khr. 

 Adhiosphicriiiiu Stein. 



Genera op Chi.amydophorida. 



^Heterophrys Archer. 



With fine radiating spines between the pseudopodia. (?) 

 '^Splurrastruni Greefif. 



Outer surface lobe-like. Sometimes formino; colonies. 



