The Crayfishes of Kentucky, with Notes on Variation, Distribution and Descriptions of New Species and Subspecies

This study was undertaken in order to close a gap which has long existed in our knowledge of the distribution of the crayfishes. The Crustacea of the majority of the surrounding states have been studied and, in many cases, problems have arisen the solutions of which lie within this territory. Until the work of Ortmann (1931) our knowledge of the Kentucky crayfishes was too fragmentary to formulate distribution for any species. A few classical records of fourteen species had been repeated through nearly a century of literature.