666 



PROTOZOOLOGY 



both lateral surfaces; 2 spines on right side; 2 cirrus-like groups on 

 posterior-left; sapropelic. A few species. 



D. pectinata L. (Fig. 313, e,/). 70-90/x long; sapropelic. 



Fig. 313. a, Epalxis mirabilis, X1200 (Roux); b, Sa-prodinium den- 

 tation, X430 (Kahl); c, S. putrinium, X470 (Lackey); d, Pelodinium 

 renijorme, X600 (Lauterborn); e, f, Disconiorpha pectinata, (e, X500; 

 f, X220) (Kahl); g, Mylestoma bipartituni, X470 (Kahl); h, Atopodinium 

 fibulatum, X520 (Kahl). 



Family 3 Mylestomidae Kahl 

 Genus Mylestoma Kahl. Posterior margin without any indenta- 

 tion, though sometimes a small one on right side, but none on left; 



