First issued in release COL21.6.
Last used in release COL23.5
Published in
Verrill, A. E., & Bush, K. J. (1897). Revision of the genera of Ledidae and Nuculidae of the Atlantic coast of the United States. American Journal of Science, ser. 4, 3: 51–63. https://www.molluscabase.org/aphia.php?p=sourcedetails&id=40609