Baker, H. B. (1927). The Mollusca collected by the University of Michigan-Williamson Expedition in Venezuela, part V. Occasional Papers of the Museum of Zoology of the University of Michigan. 182: 36 pp, pl. 20-26. Ann Arbor.
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Baker, H. B.
1927
The Mollusca collected by the University of Michigan-Williamson Expedition in Venezuela, part V
Occasional Papers of the Museum of Zoology of the University of Michigan