Mansfield, W. C., 1925. Miocene Gastropods and Scaphopods from Trinidad, British West Indies. Proceedings of the United States National Museum, 66 (2259 ): 1 -65 .
New Species-Group Names:
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manzanillaensis Mansfield, 1925. p. 12. pl. ii. f. 5.
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springvaleensis Mansfield, 1925. p. 11. pl. i. f. 3.
- trinitatensis Mansfield, 1925. p. 12. pl. i. f. 1.
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walli Mansfield, 1925. p. 13. pl. ii. f. 1.