Abstract
The Portuguese shark, Centroscymnus coelolepis, was recently taken from depths of 300-1, 200m in Suruga Bay in central Japan.This species was heretofore reported only from the Atlantic Ocean. C.owstoni is redescribed to clarify the classification of the genus Centroscymnus from Japan. C.coelolepsis and C.owstoni are distinguished by such characters as the height of the dorsal fin, the presence or absence of the abdominal ridges, the shape of the dermal denticles and the number of spiral valves.