OPALINID CILIATE INFUSORIANS — METCALF 



Measurements, in microns: 



537 



In another, younger, tadpole of the same species from the same 

 locality are larvae of apparently the same Opalina. 



OPALINA CHATTONI Weill 



Figure 105 



Host: Bujo melanostidus Schneider, from Cochinchina. 

 This rather large Opalina with large nuclei is distinctively charac- 

 terized, at least in the cysts and young stages, which Weill studied, 



FiGUKE m.-Opalina chattoni Weill from Bufo melanostictus: a. Adult. X 427; b-e. cysts, X 1677; /, small 

 individual hatched from cyst, X 1333. (After Weill.) 



