|  Family: Apex somewhat to much fan-shaped; oral region along apex, may extend ventrally 
(Illustrated Guide, 1985).  Cytostome slit-like, situated apically on non-ciliated ridge of the body 
(Carey, 1992). Genus: Body flattened, crescentic (Illustrated Guide, 1985).
 Species: 
Cell body 130 μm long (Kahl, 1930).
 
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