Alder J. (1848). Catalogue of the Mollusca of Northumberland and Durham. <i>Transactions of the Tyneside Naturalist's Field Club (1848)</i>: 97-209, available online athttp://biodiversitylibrary.org/page/33670077[details]
original descriptionAlder J. (1848). Catalogue of the Mollusca of Northumberland and Durham. <i>Transactions of the Tyneside Naturalist's Field Club (1848)</i>: 97-209, available online athttp://biodiversitylibrary.org/page/33670077[details]