MASTIGOPHORA, CHRYSOMONADINA 203 



C. pascheri Hofeneder (Fig. 89, a, b). 15-20)Lt in diameter. 



Genus Chrysamoeba Klebs. Body naked; flagellate stage ovoid, 

 with 2 chromatophores, sometimes slender pseudopodia at the same 

 time; flagellum may be lost and the organism becomes amoeboid, 

 resembling Rhizochrysis (p. 210); standing fresh water. 



C. radians K. (Fig. 90, a, b). Flagellated form 16-20^ long; amoe- 

 boid stage about 15/x with 10-20^ long radiating pseudopodia; fresh 

 water. 



Genus Chrysapsis Pascher. Solitary; plastic or rigid; chromato- 

 phore diffused or branching; with stigma; amoeboid movement; 

 holophytic, holozoic; fresh water. Several species. 



C. sagene P. (Fig. 89, c). Anterior region actively plastic; stigma 

 small; 8-14/n long; flagellum about SO/x long. 



Genus Chrysococcus Klebs. Shell spheroidal or ovoidal, smooth 

 or sculptured and often brown-colored; through an opening a flagel- 

 lum protrudes; 1-2 chromatophores; one of the daughter individuals 

 formed by binary fission leaves the parent shell and forms a new one; 

 fresh water. 



C. ornatus Pascher (Fig. 89, d). 14-16^ by 7-10m. 



Genus Mallomonas Perty (Pseudomallomonas Chodat). Body 

 elongated; with silicious scales and often spines; 2 chromatophores 

 rod-shaped; fresh water. Numerous species. 



M. litomosa Stokes (Fig. 89, e). Scales very delicate, needle-like 

 projections at both ends; flagellum as long as body; 24-32^ by 8/x. 



Genus Pyramidochrysis Pascher. Body form constant; pyriform 

 with 3 longitudinal ridges; flagellate end drawn out; a single chro- 

 matophore; 2 contractile vacuoles; fresh water. 



P. modesta P. (Fig. 89,/). 11-13^ long. 



Genus Sphaleromantis Pascher. Triangular or heart-shaped; 

 highly flattened; slightly plastic; 2 chromatophores; 2 contractile 

 vacuoles; stigma large; long flagellum; fresh water. 



S. ochracea P. (Fig. 89, g). 6-13^ long. 



Genus Kephyrion Pascher. With oval or fusiform lorica; body fills 

 posterior half of lorica; one chromatophore; a single short flagellum; 

 small; fresh water. 



K. ovum P. (Fig. 89, h). Lorica up to 7n by 4^. 



Genus Chrysopyxis Stein. With lorica of various forms, more or 

 less flattened; 1-2 chromatophores; a flagellum; attached to algae in 

 fresh water. 



C. cyathus Pascher (Fig. 89, i). One chromatophore; flagellum 

 twice body length; lorica 20-25^ by 12-15/x. 



Genus Cyrtophora Pascher. Body inverted pyramid with 6-8 



