MolluscaBase name details
basis of record
Clench, W. J. (1957). A catalogue of the Cerionidae (Mollusca - Pulmonata). <em>Bulletin of the Museum of Comparative Zoology, Harvard University.</em> 116(2): 121-169 (April)., available online at https://www.biodiversitylibrary.org/page/2789647
page(s): 141; note: See note under Pupa chrysalis bidens Beck, 1837 [details]