MASTIGOPHORA, CHRYSOMONADINA 



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P. aspergillus P. (Fig. 105, c, d). Shell about 35m long by 25/z wide; 

 chromatophore very small; a large leucosin grain; fresh water. 



Genus Myxochrysis Pascher. Body multinucleate, amoeboid; with 

 yellowish moniliform chromatophores, many leucosin granules and 

 contractile vacuoles; holozoic; surrounded by a brownish envelop 

 which conforms with body form; flagellated swarmers develop into 



Fig. 105. a, flagellate and b, amoeboid phase of Chrysamoeba radians, 

 X670 (Klebs); c, surface view and d, optical section of Porochrysis asper- 

 gillus, X400 (Pascher); e-j, Myxochrysis paradoxa (Pascher). e, a medium 

 large Plasmodium with characteristic envelop; the large food vacuole 

 contains protophytan, Scenedesmus, X830; f, diagrammatic side view of a 

 Plasmodium, engulfing a diatom; moniliform bodies are yellowish 

 chromatophores, X1000; g-i, development of swarmer into Plasmodium 

 (stippled bodies are chromatophores), X1200. 



multinucleate Plasmodium; plasmotomy and plasmogamy; fresh 

 water (Pascher, 1916a). 



M. paradoxa P. (Fig. 105, e-j). Plasmodium 15-18^ or more in 

 diameter; in standing water. 



Genus Angulochrysis Lackey. Body ovoid: colorless, thin lorica 

 rounded anteriorly and flattened posteriorly into "wings"; a single 

 flagellum long; no cytostome; two bright yellow-brown chromato- 

 phores; no stigma; swims with a slow rotation; marine (Lackey, 

 1940). 



