[Some results of the study of the trematod fauna of the fresh-water molluscs Melanopsis praemorsa (L.) from water bodies in Azerbaijan. Communication 4. New species of cyathocotylid cercariae].

Pictures and descriptions of morphology and differential diagnosis of two new species of cyathocotylid cercariae--Cercaria agstaphensis 37 and Cercaria agstaphensis 38 are given. Special attention is paid to the structure of the glandular apparatus, excretory system, tegument armature, and other individual peculiarities of cercariae.