186 



PROTOZOOLOGY 



C. tnmcata Ehreiiborg (Fig. 89, e). 15-30/^ long. 



Genus Cryptochrysis Pascher. Furrow indistinctly granulated; 

 2 or more chromatoi)hores brownish, olive-green, or dark green, 

 rarely red; pyrenoid central; 2 equal flagella; some lose flagella 

 and may assume amoeboid form; fresh water. 



C. commutata P. (Fig. 89,/). Bean-shaped; 2 chromatophores; 

 19m by 10/1. 



Fig. 89. a, Cryptomonas ovata, XSOO (Pascher); b, Chilomonas Para- 

 mecium., X1330 (Btitschli); c, d, Chrysidella schaudinni, X1330 (Win- 

 ter); e, Cyathomonas truncata, X670 (Ulehla); f, Cryptochrysis com- 

 ynutata, X670 (Pascher); g, RJiodomonas lens, X1330 (Ruttner); h, 

 Nephroselmis olvacea, X670 (Pascher) ;i, Protochrysis phaeophycearum, 

 XSOO (Pascher); j, k, Phaeothamnion confervicolum, X600 (Klihn). 



Genus Rhodomonas Karsten. Furrow granulated; chromato- 

 phore one, red (upon degeneration the coloring matter becomes 

 dissolved in water) ; pyrenoid central ; fresh water. 



R. lens Pascher et Ruttner (Fig. 89, g). Spindle-form; about IQn 

 long; in fresh water. 



Family 2 Nephroselmidae Pascher 



Body reniform; with lateral equatorial furrow; 2 flagella arising 

 from furrow, one directed anteriorly and the other posteriorly. 



Genus Nephroselmis Stein. Reniform; flattened; furrow and 

 cytopharynx distinct; no stigma; 1-2 chromatophores, discoid. 



