Emerson, W. K. (1971). Cadulus (Gadila) perpusillus (Sowerby, 1832), an earlier name for C. (G.) panamensis Sharp and Pilsbry, 1898. The Nautilus. 84(3): 77-81, figs. 1-4.
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Emerson, W. K.
1971
<i>Cadulus (Gadila) perpusillus</i> (Sowerby, 1832), an earlier name for <i>C. (G.) panamensis</i> Sharp and Pilsbry, 1898