MolluscaBase name details
original description
Godwin-Austen, H. H. (1889). On a collection of land-shells made in Borneo by Mr. A. Everett with supposed new species. Part I. Cyclostomacae. <em>Proceedings of the Zoological Society of London.</em> 57 (3): 332-335, pls 35-39. London [October]., available online at https://biodiversitylibrary.org/page/28698963
page(s): 338, plate 39, fig. 6. [details]
additional source
Smith, E. A. (1895). On a collection of land-shells from Sarawak, British North Borneo, Palawan, and other neighbouring islands. <em>Proceedings of the Zoological Society of London.</em> 63(1): 97-127., available online at https://www.biodiversitylibrary.org/page/30983028
page(s): 122. [details]