PERITRICHA 



693 



Fig. 326. a, Urceolaria mitra, X340 (Wallengren); b, U. paradoxa, 

 X270 (Claparede and Lachmann); c, Trichodina pediculus, X 530 (James- 

 Clark); d, T. urinicola, X590 (Fulton); e, T. sp., X600 (Diller); f, Cyclo- 

 chaeta spongillae, X600 (Jackson); g, h, front and side views of C. 

 domerguei, X670 (MacLennan). 



