Thompson published a Checklist and bibliography of land and freshwater snails of Mexico and Central America in 2008; it was published online at the website of the Florida Museum of Natural History museum.
Recently an updated version of this publication was published in the Bulletin of the Museum, vol. 50 (Thompson 2011). It is available here: http://bit.ly/quhmro. One of the additions are species checklists for each country and the states in Mexico.