Redescription of the Rare Squaloid Shark Oxynotus japonicus from Suruga Bay and the Enshu-nada Sea, Japan

抄録

The rare squaloid shark Oxynotus japonicus Yano and Murofushi, 1985 has been known only from the male holotype since its original description. Six female specimens were collected from Suruga Bay and the Enshu-nada Sea, Japan, and detailed descriptions of them are given here. The female reproductive organs of this species are described for the first time and size at maturity is discussed.