548 



PROTOZOOLOGY 



0. carolinensisM. 90-400/1 by 32-170/x; in Rana pipiens spheno- 

 cephala. 



0. pickeringii M. 200-333/1 by 68-100^; in Hyla pickeringii. 



0. oregonensis M. 526/x by 123^; in Hyla regilla. 



0. spiralis M. 300-355/z long, 130-140^ wide, 25-42/i thick; in 

 Bujo compactilis. 



0. chorophili M. About 470/i by IOOm; in Chorophilus triseriatus. 



0. kennicotii M. About 240/1 by 85m; in Rana areolata. 



Fig. 262. a, Three individuals of Opalina hylaxena, X230; b-f, 0. 

 obtrigonoidea, X60 (b, c, from Bufo fowler i; d-f, from Rana pipiens); g, 

 Cepedea cantabrigensis, X230; h, Zelleriella scaphiopodos, X230. (Met- 

 calf.) 



Genus Cepedea Metcalf. Cylindrical or pyriform; circular in 

 cross-section; multinucleate; all in Amphibia. Numerous species. 



C. cantabrigensis M. (Fig. 262, g). About 350/t by 84/t; in Rana 

 cantabrigensis. 



C. hawaiensis M. 170-200/i by 43-60/i; in Rana catesbeiana; 

 Hawaii. 



C. obovoidea M. About 315/i by 98/i; in Bufo lentiginosus. 



C. floridensis M. About 230/i by 89/i; in Scaphiopus albus. 



