MASTIGOPHORA, CHRYSOMONADINA 



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chromatophores ; a single nucleus; oil drops and leucosin; holophytic. 

 Examples : 



Pontosphaera haeckeli Lohmann (Fig. 93, a). 

 , Discosphaera tubifer Murray and Blackman (Fig. 93, h). 



Family 5 Silicoflagellidae Borgert 



Exclusively marine planktons; with siliceous skeleton which en- 

 velops the body. Example: Distephanus speculum (Miiller) (Fig. 93, 

 c). 



Fig. 93. a, Pontosphaera haeckeli, X1070 (Kiihn); b, Discosphaera tubi- 

 fer, X670 (Klihn); c, Distephanus speculum, X530 (Kiihn); d, Rhizo- 

 chrijsis scherffeli, X670 (Doflein); e-g, Hydrurus foetidus (e, entire 

 colony; f, portion; g, cyst), e (Berthold), f, X330, g, X800 (Klebs); h, i, 

 Chrysocapsa paludosa, X530 (West); j, k, Phaeosphaera gelatinosa (j, part 

 of a mass, X70; k, three cells, X330) (West). 



Suborder 2 Rhizochrysidina Pascher 



No flagellate stage is known to occur; the organism possesses pseu- 

 dopodia; highly provisional group, based wholly upon the absence of 

 flagella; naked or with test; various forms; in some species chroma- 



