Abstract
Two new genera, Propherallodus and Pherallodichthys and their type species, Propherallodus briggsi sp.nov. and Pherallodichthys meshimaensis sp.nov. are described. Propherallodus is mainly diagnosed by the uniserial incisors with rounded tips on both jaws, lachrymal sensory canal with two openings, preopercular sensory canal with three openings and by the absence of mandibular sensory canal, and this genus is placed in the subfamily Diplocrepinae. Pherallodichthys is diagnosed by the uniserial incisors on both jaws, of which those in front have rounded tips but those at sides on upper jaw are highly compressed and hooked posteriorly, lachrymal and preopercular sensory canals with two openings each and mandibular sensory canal missing.This genus is tentatively placed in the subfamily Aspasminae. Pherallodus smithi is placed in Propherallodus gen. nov. and a key to Propherallodus species is given. Pherallodus indicus is described from newly collected larger specimens with accounts of unique head sensory canals.Arrangements of head sensory canals of the family Gobiesocidae are provisionally reviewed for 28 species of all eight subfamilies.These characters are found to be apparently important for higher classification.
