|  Genus: Cytostome in rear 1/3 of body (Illustrated Guide, 1985).  
Irregular, almost triangular in shape; anterior pointed; posterior rounded; 
distinctly flattened  with a delicate keeled armour; somatic ciliation reduced; 
ventrally 3 longitudinal cilary rows; cytostome in a depression at posterior ventral region; 
tooth-like projection on the left side 
(Carey, 1992). Species: 
Cell body 25 μm long (Kahl, 1930).
 
 |