Abstract
In 1904, Bezzenberger investigated ciliates from the rectum of several amphibian hosts of Asia and described two new species of Nyctotherus, N. macropharyngeus and N. magnus. Recently Dashi Nie (1932) described two more new species, N. nankingensis and N. pyriformis, with several opalinids from Rana limnocharis Gravenhorst of Nanking. It is the purpose of this paper to describe a new species of Nyctotherus from the Chinese frog, Rana spinosa.

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