Shikama, T., 1977. Descriptions of new and noteworty Gastropoda from Western Pacific and Indian Oceans. Science Reports of the Yokohama National University, sect. 2. vol. 24: 9 -23 .
New Species-Group Names:
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ambaroides Shikama, 1977. p. 20. pl. 4. f. 3. a. b;pl. 5. f. 3.
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benten Shikama & Oishi, 1977. p. 21. pl. 4. f. 4a. b;pl. 5. f. 9.
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keatiformis Shikama & Oishi, 1977. p. 19. pl. 4 f. 1a. b;pl. 5. f. 7.
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oishii Shikama, 1977. p. 22. pl. 4. f. 6a. b;pl. 5. f. 4.
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paradiseus Shikama, 1977. p. 20. pl. 4. f. 2a. b;pl. 5. f. 6.