Home About ITIS About ITIS Page What's New Organizational Information Background Information Organization and Partners Memorandum of Understanding Data Development History and Data Quality Standards and Database Documentation Frequently Asked Questions What is an ITIS TSN? Glossary of ITIS Terms? How Do I Cite ITIS? How Do I Link to ITIS? What is the format of a download file? Contact Us Data Access and Tools Data Access Information ITIS Tools Advanced Search Web Services Web Service Information Description of ITIS Web Services Developing a Client ITIS Solr Web Services ITIS Solr WS Examples Hierarchical Report Compare Names Get ITIS Data Full Database Download Instructions Database Files Download Data in TWB Format Submit and Update Data Data Submission Information Submission Requirements and Guidelines ITIS Taxonomic Workbench

Publication: Penn, George Henry. 1953. Two New Crawfishes of the Genus Procambarus from Texas, Louisiana, and Arkansas (Decapoda, Astacidae). American Museum Novitates, no. 1636. 1-10.