HOLOTRICHA 



729 



Fig. 311. a, Nassula aurea, X190 (Schewiakoff); b, Paranassula micro- 

 stoma, X400 (Noland); c, Cyclogramma trichocystis, X510 (Stokes); 

 d, Chilodontopsis vorax, X200 (Stokes); e, Eucamptocerca longa, X320 (da 

 Cunha); f, Orthodon hamatus, X160 (Entz); g, Dysteria calkinsi, X540 

 (Calkins); h, Trochilia palustris, X1070 (Roux); i, Trochilioides recta, 

 X740 (Kahl); j, Hartmannula entzi, X220 (Entz); k, Chlamydodon 

 mnemosyne, X520 (MacDougall); 1, Phascolodon vorticella, X340 (Stein). 



Genus Chilodontopsis Blochmann. Elongate ellipsoid; colorless; 

 ventral surface flattened, dorsal surface slightly convex; both sides 

 ciliated; oral basket without vestibule; cytostome with a mem- 

 branous ring; usually with a postoral ciliary furrow; fresh water. 



C. vorax (Stokes) (Fig. 311, d). Elongate ellipsoid; anterior re- 



