554 



PROTOZOOLOGY 



h Aidf b 



Fig. 252. a, Dexiotrichides centralis, X500 (Kahl); b, Cyrtolophosis 

 mucicola, X670 (Kahl); c, Urocentrum turbo, X200 (Biitschli); 

 d, Urozona butschlii, X440 (Kahl);e, Uronema marina, X490 (Kahl); 

 f, g, U. pluricaudatuni, X940 (Noland); h, Homalogastra setosa, X450 

 (Kahl); i, j, Stokesia vernalis, X340 (Wenrich); k, Ophrxjoglena collini, 

 Xl50 (Lichtenstein); 1, 0. pyriformis, Xl80 (Rossolimo); m, 0. in- 

 testinalis, X55 (Rossolimo). 



small tongue-like membrane; cytopharynx indistinct; macro nu- 

 cleus spherical, central; contractile vacuole terminal; in salt or 

 fresh water. 



U. marina D. (Fig. 252, e). 30-50^ long; in salt water in de- 

 caying algae. 



U. pluricaudatuni Noland (Fig. 252, f, g). Body appears to be 



