480 PROTOZOOLOGY 



C. coronata Penard (Fig. 202, i). 6-12 spines; 140/* in diameter; 

 in moss. 



Genus Pamphagus Bailey. Test hyaline membranous, flexible; 

 aperture small; body fills the envelope completely; spherical nuc- 

 leus large; contractile vacuoles; filo podia long, delicate, branching, 

 but not anastomosing; fresh water. Species (Hoogenraad, 1936). 



P. mutabilis B. (Fig. 202, j). Envelope 40-100/* by 28-68/*. 



Genus Plagiophrys Claparede and Lachmann. Envelope thin, 

 hyaline, changeable with body form; usually elongate-oval with 

 rounded posterior end; narrowed at other half; envelope finely 

 punctated with a few small plates; aperture round; cytoplasm 

 clear; nucleus large; pseudopods straight filopodia, sometimes 

 branching ; fresh water. 



P. parvipunctata Penard (Fig. 202, k). Envelope 50/* long. 



Genus Leptochlamys West. Test ovoid, thin transparent chitinous 

 membrane, circular in optical section; aperture end slightly ex- 

 panded with a short neck; aperture circular, often oblique; body 

 fills test; without vacuoles; pseudo podium short, broadly expanded 

 and sometimes cordate; fresh water. 



L. ampullacea W. (Fig. 203, a). Nucleus large, posterior; with 

 green or brown food particles; test 45-55/* by 36-40/* in diameter; 

 aperture 15-17/*; among algae. 



Genus Chlamydophrys Cienkowski. Test rigid, circular in cross- 

 section; aperture often on drawn-out neck; body fills the test; zonal 

 differentiation of cytoplasm distinct; nucleus vesicular; refractile 

 waste granules; pseudopodia branching; fresh water or coprozoic. 

 Species (Belaf, 1926); plasmogamy and division (Belar, 1926). 



C. stercorea C. (Fig. 203, k). Test 18-20/* by 12-15/*; mature cysts 

 yellowish brown, 12-15/* in diameter; multiplication by budding; 

 coprozoic and fresh water. 



Genus Cochliopodium Hertwig and Lesser. Test thin, flexible, 

 expansible and contractile; with or without extremely fine hair-like 

 processes; pseudopodia blunt or pointed, but not acicular. Several 

 species. 



C. bilimbosum (Auerbach) (Fig. 203, b). Test hemispherical; pseu- 

 dopodia conical with pointed ends; test 24-56/* in diameter; fresh 

 water among algae. 



Genus Amphizonella Greeff. Test membranous with a double 

 marginal contour; inner membrane smooth, well-defined; outer 

 serrulate; aperture inverted; a single nucleus; pseudopodia blunt, 

 digitate, and divergent. 



A. violacea G. (Fig. 203, c). Test patelliform, violet-tinted; with 



