626 



PROTOZOOLOGY 



Fig. 284. a, Urceolaria mitra, X340 (Wallengren) ; b, U. paradoxa, 

 X270 (Claparede and Lachmann); c, Trichodina pediculus, X530 

 (James-Clark); d, T. urinicola, X590 (Fulton); e, T. sp., X600 

 (Diller); f, Cydochaeta spongillae, X600 (Jackson); g, C. domerguei, 

 X800 (Wallengren). 



and probably fish. Those found on Hydra and gills of Necturiis 

 and Triturus larvae are probably identical (Fulton, 1923). 



T. urinicola Fulton (Fig. 284, d). 50-90^ long; teeth 28-36; 

 in urinary bladder of a moribund Bufo sp. and Triturus. 



T. sp. Diller (Fig. 284, e). 30-40/i in diameter; on skin and gills 

 of frog and toad tadpoles. 



Genus Cydochaeta Jackson. Similar to Trichodina; but bristles 

 or cirri surrounding attaching organella distinctly visible; com- 



