616 



PROTOZOOLOGY 



Genus Uronema Dujardin (Cryptochilum Maupas). Oval to elon- 

 gate ovoid; slightly flattened; anterior region not ciliated; incon- 

 spicuous peristome with ciliated right edge; cytostome on the ven- 



FiG. 291. a, Dexiotrichides centralis, X500 (Kahl); b, Cyrtolophosis 

 mucicola, X670 (Kahl); c, Urocentriun turbo, X200 (Biitschli); d, Urozona 

 butschlii, X440 (Kahl); e, Uronema marina, X490 (Kahl); f, g, U. pluri- 

 caudatum, X940 (Noland); h, Homalogastra setosa, X450 (Kahl); i, j, 

 Stokesia vernalis, X340 (Wenrich); k, Ophryoglena collini, Xl50 (Lichten- 

 stein); 1, 0. pyriformis, Xl80 (Rossolimo) ; m, 0. intestinalis, X55 

 (Rossolimo). 



tral side close to left border in the anterior half, with a small tongue- 

 like membrane; cyto pharynx indistinct; macro nucleus spherical, 

 central; contractile vacuole terminal; in salt or fresh water. 



