The Genus Harpa (Mollusca: Gastropoda) in the New World

Abstract

The name Harpa americana has been applied to every fossil Harpa specimen found in the New World. A second example of true H. americana from the Gurabo Formation, Dominican Republic, shows that none should be so referred and the form that occurs in the Agueguexquite Formation of Mexico is here named H. isthmica, n. sp. The examples taken from the Esmeraldas Formation of Ecuador are better referred to the living West Coast species H. crenata.