Анотація:
The description and pictures of the new cestoda — P. eschrlchtii sp. nov., parazitizing in grey whale are presented in the given article. The new species differs from the known ones of the genus Priapocephalus Nybelin, 1922 in lesser dimensions of the body, lesser quantity of fibres in the bundles of internal layer of longitudinal musculature, less dimensions of cirrus sac and ovary. Besides, P. eschrichtii sp. n, was found in grey whale — a new of Tetrabothriidae.