Pfeiffer, L. (1855 ["1854"]). Descriptions of fifty-seven new species of Helicea, from Mr. Cuming's collection. Proceedings of the Zoological Society of London. 22(277): 286–288; 22(278): 289–298 [8 May 1855].
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Pfeiffer, L.
1855 ["1854"]
Descriptions of fifty-seven new species of Helicea, from Mr. Cuming's collection