The malacological works of Sylvanus Hanley (and his relative Charles Thorpe) are discussed and their dates in some cases clarified. The taxa that first appear in these works are listed, their type specimens noted when known, and the current status of the available taxa discussed. Of the 375 species-group names that first appear in these works, 367 are available, and 8 are nomina nude. Of the 367 available species-group taxa, approximately 219 are now considered valid. Approximately 60% of the available species are represented by type material, mainly in the Natural History Museum in London and in the Leeds City Museum in Leeds, U.K. Hanley also described several genus-group and family-group names, some of which are still considered valid.
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Vol. 55 • No. 2