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Sorita, E. (1986). Studies on Species of the Genus Nipponochloritis Habe, 1955 from Mainly Kanto District, Honshu, Japan I : A New Subspecies of Nipponochloritis pumila (Gude, 1902) and a New Subspecies of N. bracteatus (Pilsbry, 1902). Venus (Japanese Journal of Malacology). 45(2): 99-108.