MolluscaBase name details
original description
(of Lymnaea catascopium Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 2, fig. 3 [details]
basis of record
Say, T. (1830-1834). American Conchology, or descriptions of the shells of North America. Illustrated by coloured figures from original drawings executed from nature. School Press, New Harmony, Indiana. Part 1 (1830a); Part 2 (April 1831a); Part 3 (September 1831a); Part 4 (March 1832); Part 5 (August 1832); Part 6 (April 1834); Part 7 (1834?, published after Say's death; edited by T. A. Conrad)., available online at http://biodiversitylibrary.org/page/7959266
page(s): 6: pl. 55, fig. 2 [details]