266 



PROTOZOOLOGY 



tubular, and those of young individuals are attached to the exterior 

 of parent tests ; fresh water. 



H. ramosum L. (Fig. 108, g). Lorica 50-7 0/j long by 5-9 ^ in diame- 

 ter; body up to 30/x by 5/x; on vegetation in standing fresh water. 



Genus Stylopyxis Bolochonzew. Solitary; body located at bottom 

 of a delicate stalked lorica with a wide aperture ; 2 lateral chromato- 

 phores ; fresh water. 



S. mucicolali. (Fig. 108, h). Lorica 17— 18^ long; stalk about 33/x 

 long; body 9— llyu long: fresh water. 



Family 4 Coccolithidae Lohmann 



The members of this family occur, with a few exceptions, in salt 

 water only; with perforate (tremalith) or imperforate (discolith) 

 discs, composed of calcium carbonate; 1-2 flagella; 2 yellowish 



Fig. 109. a, Pontosphaerahaeckeli, X1070 (Kiihn); b, Discosphaeratubi- 

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

 chrysis scherffeli, X670 (Doflein); e-g, Hy drums 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, X 70 ; k, three cells, X330) (West). 



