182 



PROTOZOOLOGY 



Fig. 88. a, Pontosphaera haeckeli, X1070 (Kiihn); b, Discosphaera 

 tubifer, X670 (Kiihn); c, Distephanus speculum, X530 (Kiihn); d, 

 Rhizochrysis scherffeli, X670 (Doflein); e-g, Hydrurus foetidus (e, en- 

 tire colony; f, portion; g, cyst), e (Bertholcl), 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). 



several in linear association by pseudopodia; one yellow-brown 

 chromatophore; fresh water. 



C. catenatum L. Cells 12-14yu in diameter. 



Suborder 3 Chrysocapsina Pascher 



Palmella stage prominent; flagellate forms transient; colonial; 

 individuals enclosed in a gelatinous mass; 1-2 flagella, one chro- 

 matophore, and a contractile vacuole; one group of relatively 

 minute forms and the other of large organisms. 



Genus Hydrurus Agardh. In a large (1-30 cm. long) branching 

 gelatinous cylindrical mass; cells yellowish brown; spherical to 

 eUipsoidal; with a chromatophore; individuals arranged loosely 



