NOTES ON THE COLOURATION OF FRESHWATER CRAB, GEOTHELPHUSA DEHAANI(WHITE), IN NORTHERN DISTRICTS OF JAPAN

Abstract

The author (1976) reported that the bio-geographical colouration of freshwater crab, Geothelphusa dehaani (WHITE) can be distingished fundamentally in three types as shown below : [table] The present short report deals with additional notes of the bio-geographical colouration of this species obtained from northern part of Honshu. In this area, all specimens are included in DA-type.