Godwin-Austen, H. H. (1875). Supplementary Notes on the Species of Helicidæ of the subgenus Plectopylis. Proceedings of the Zoological Society of London. 43 (1): 43-44. London [June].
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Godwin-Austen, H. H.
1875
Supplementary Notes on the Species of Helicidæ of the subgenus <i>Plectopylis</i>