|  Genus (Claparède and Lachmann, 1858):  
Ovoid or cylindrical; apical cytopharynx; posterior bald; caudal cilia present; 
contractile vacuole posterior (Carey, 1992). Species: | 
 
 
Urotricha globosa Schewiakoff, 1893: 18 μm long, spherical in shape; cell body ciliated except at rear where a single caudal cilium emerges; macronucleus large and spherical; contractile vacuole posterior (Carey, 1992).