MASTIGOPHORA, CHRYSOMONADINA 269 



iron) in old individuals; through the aperture are extruded extremely 

 fine anastomosing rhizopods; protoplasm which fills the shell is 

 colorless; a single nucleus, two spindle-form brown chromatophores, 

 several contractile vacuoles and leucosin body; marine water. 



C. vorax P. (Fig. 110, e, /). The shell measures 14-18/x long, 7-10/x 

 broad, and 5-6/x high; on marine algae. 



Suborder 3 Chrysocapsina Pascher 



Palmella stage prominent; flagellate forms transient; colonial; 

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

 phore, 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 

 ellipsoidal; with a chromatophore; individuals arranged loosely in 

 gelatinous matrix; apical growth resembles much higher algae; mul- 

 tiplication of individuals results in formation of pyrimidal forms 

 with a flagellum, a chromatophore, and a leucosin mass; cyst may 

 show a wing-like rim; cold freshwater streams. 



H. foetidus Kirschner (Figs. 32, d-f; 109, e-g). Olive-green, feath- 

 ery tufts, 1-30 cm. long, develops an offensive odor; sticky to touch; 

 occasionally encrusted with calcium carbonate; in running fresh 

 water. 



Genus Chrysocapsa Pascher. In a spherical to ellipsoidal gelati- 

 nous mass; cells spherical to ellipsoid; 1-2 chromatophores; with or 

 without stigma ; freshwater. 



C. paludosa P. (Fig. 109, h, i). Spherical or ellipsoidal with cells 

 distributed without order; with a stigma; 2 chromatophores; 

 s warmer pyriform with 2 flagella; cells llju long; colony up to 100/z 

 in diameter. 



Genus Phaeosphaera West and West. In a simple or branching 

 cylindrical gelatinous mass; cells spherical with a single chroma- 

 tophore; fresh water. 



P. gelatinosa W. and W. (Fig. 109, j, k). Cells 14-17.5/x in diameter. 



References 



Butschli, O. : (1883-1887) Mastigophora. Bronn's Klassen und Ord- 



nungen des Thierreichs. 1, pt. 2. 

 Doflein, F. and Reichenow, E. : (1949) Lehrbuch der Protozoen- 



kunde. 6th ed. 1. Jena. 

 Grasse, P.-P.: (1952) Traite de Zoologie. I. Fasc. 1. Paris. 

 Kent, S.: (1880-1882) A manual of Infusoria. London. 



