192 



PROTOZOOLOGY 



Fig. 91. a, Coccomonas orbicularis, x500 (Stein); b, Chlorogonium 

 euchlorum, X430 (Jacobsen); c, Phyllomonas phacoides, X200 (Kor- 

 schikoff); d, Sphaenochloris printzi, X600 (Printz); e, Korschikoffia 

 guttula, X1670 (Pascher); f, Furcillalobosa, X670 (Stokes); g, Hyalo- 

 gonium klebsi, X470 (Klebs); h, Polytoma iwella, X670 (Dangeard); 

 i, Parapolytorna satura, Xl600 (Jameson); j, Trichloris paradoxa, 

 X990 (Pascher). 



pyrenoids; numerous scattered contractile vacuoles; usually a 

 stigma; a central nucleus; asexual reproduction by 2 successive 

 transverse fissions during motile phase; isogamy reported; fresh 

 water. 



C. euchlorum E. (Fig. 91, 6). 25-70yu by 4-15^1; in stagnant 

 water. 



Genus Phyllomonas Korschikoff. Extremely flattened; mem- 

 brane delicate; 2 flagella; chromatophore often faded or indistinct; 

 numerous pyrenoids; with or without stigma; many contractile 

 vacuoles; fresh water. 



P. phacoides K. (Fig. 91, c). Leaf-like; rotation movement; up 

 to 100/x long; in standing fresh water. 



Genus Sphenochloris Pascher. Body truncate or concave at 

 flagellate end in front view; sharply pointed in profile; 2 flagella 

 widely apart; chromatophore large; pyrenoid; stigma; contractile 

 vacuole anterior; fresh water. 



S. printzi P. (Fig. 91, d). Up to 18m by 9/^. 



