original description
Pilsbry, H. A. (1926). Costa Rican land shells collected by A. A. Olsson. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 78: 127-133.
page(s): 129, pl. 11, figs 1, 2 [details] Available for editors [request]
source of synonymy
Thompson, F. G. (1987). Giant carnivorous land snails from Mexico and Central America. <em>Bulletin of the Florida State Museum. Biological Sciences.</em> 30(2): 29-52., available online at https://ufdc.ufl.edu/UF00095799/00001 [details] Available for editors [request]
From editor or global species database
Type locality "No definite locality in Costa Rica was given by Gabb, but it is probably identical with the small form from the elevated central plain of Costa Rica" [details]