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New Ichthyophis species from Indochina (Gymnophiona, Ichthyophiidae): 1. The unstriped forms with descriptions of three new species and the redescriptions of I. acuminatus Taylor, 1960, I. youngorum Taylor, 1960 and I. laosensis Taylor, 1969
Lomonosov Moscow State University, Department of Vertebrate Zoology, Biological Faculty, Moscow GSP-1, Russia
Institute of Ecology and Evolution, Joint Russian-Vietnamese Tropical Research and Technological Center of the A.N. Severtsov, Ho Chi Minh City, Vietnam