Abstract
Four specimens (62.5–67.8 mm in standard length) of the chiasmodontid fish, Dysalotus oligoscolus Johnson and Cohen, 1974, collected off Boso peninsula, the northeast Bonin Islands and southeastern Kyushu, Japan, represent the first records of the species from Japanese waters. The species is distinguished from a congeneric species, Dysalotus alcocki, by the following combination of characters: two rows of minute external prickles arranged above and below the lateral line; prevomerine teeth present. The new Japanese name “Kakushi-toge-bouzugisu” is proposed for the species.
