Snails of Mexico and Central America – Invertebrate Zoology https://www.floridamuseum.ufl.edu/iz/resources/mexico-central-america-snails/
Abstract The following list of non-marine gastropod fauna summarizes the known species and subspecies that are recognized from Mexico and Central America. It is an annotated list of 1789 terminal taxa presented in a hierarchical framework. These include 1491 native species plus 278 native subspecie
ANSP Academy of Natural Sciences, Philadelphia, Pennsylvania