MolluscaBase name details
original description
(of Ibycus (Cryptibycus) T. D. A. Cockerell, 1891) Cockerell, T. D. A. (1891). Notes on slugs, chiefly in the collection at the British Museum. <em>Annals and Magazine of Natural History; Zoology, Botany, and Geology, series 6.</em> 7: 97-107., available online at https://www.biodiversitylibrary.org/page/25164578
page(s): 98, 99 [details]
additional source
Henderson, J. B., Jr. (1898). A list of land and fresh water shells of Enganio with descriptions of new species. <em>The Nautilus.</em> 12(2): 13–17, pl. 2., available online at https://biodiversitylibrary.org/page/1746711
page(s): 14, pl. 2, fig. 6 [details]