ABSTRACT
Spine or lanceolate process present along each side of caudal peduncle, or scales covering body very small, almost not visible to naked eye, but impart notable roughness to skin. Two more genera are known from the Pacific coast of Japan, which have 2 fixed bony plates on each side of the caudal peduncle. In the genus Cyphomycter Fowler and Bean, 1929 adult fish have a swelling, compressed laterally, which resembles a crest on the upper side of the snout instead of a horn. In large fish, course of lateral line distinct in form of dark spots the same color as the bucklers against a general body background of dark chocolate-brown. Two species of the genus Zanclus-canescens and cornutus-described by Linnaeus are very similar to each other, especially the juveniles; in the adult of Z. cornutus the spiny process in front of the eyes was taken as a distinguishing character, which is absent in young fish of Z. canescens.
