Abstract
An examination of small samples of three species of anuran frogs (Amolops afghanus, Rana liebigii and R. khare) originating in Nagaland (northeastern India) revealed three species of trematodes, two of them being new to science. These include Batrachotrema nagalandensis sp. nov., (type hosts a. afghanus), Opisthioparorchis indica sp. nov. (type host A. afghanus) and O. yunnanse Li, 1996. This is the first record of their respective genera in India. The distinguishing features of B. nagalandensis sp. nov. are - testes located in the middle third of the body, and long irrus sac extending posteriorly beyond the ventral sucker, O. indica sp, nov. is distinguished by having oral and ventral suckers of almost equal size, intestinal caeca extending beyong the ventral sucker up to the anterior border of testes, the genital pore at the level of the oral sucker and vitellaria confluencing medially in the pre and posttesticular regions. Koshima (Nagaland) and Rana liebigii form a new locality and new host record, respectively, for O. yunnanse.