抄録
Hegura Island (or Hegurajima) is a small island (about 1km2) located in the Japan Sea, at about 50km from Wajima City of Noto Peninsula. In the summer of 1968, the author made a herpetological survey on the island and confirmed the occurrence of only one species, Natrix vibakari (Boie).
The snake is rather commonly found in the grass land area. It seems that the feeding habit and the habitat of the snakes in the island somewhat differ from those of them in the mainland of Japan.
