Thompson, F. G. (1968). Ceochasma, a remarkable new land snail from Colima, Mexico (Gastropoda, Prosobranchia, Helicinidae). Proceedings of the Biological Society of Washington. 81: 45-52.
289434
Thompson, F. G.
1968
<i>Ceochasma</i>, a remarkable new land snail from Colima, Mexico (Gastropoda, Prosobranchia, Helicinidae)
Proceedings of the Biological Society of Washington