Proceedings of 

 the United States 

 National Museum ^^^^^^c^ 



SMITHSONIAN INSTITUTION . WASHINGTON, D.C. 



RANGE AND VARIATIONS OF SUBSPECIES 

 OF CAMBARUS LONGULUS 

 (DECAPODA, ASTACIDAE) 



By Hugo A. James ^ 



As a result of the loss of the type specimens and confusion arising 

 from an erroneous restriction of the type locality of the typical sub- 

 species, the crayfish Cambarus longulus Girard, 1852, has been poorly 

 understood; furthermore, the ranges of its two previously described 

 subspecies have never been clearly delineated. 



This report is based on a restudy of much of the material seen by 

 previous authors and of representatives of all the collections of 

 C. longulus in the U.S. National Museum (including those previously 

 a part of the collection of H. H. Hobbs, Jr.). In addition, personal 

 field studies within the ranges of all three subspecies herein recognized 

 have supplemented the study of preserved specimens. A total of 

 approximately 1300 specimens in 265 collections from 219 localities 

 have been included.. 



The maps have been prepared from drainage, contour, and base 

 maps obtained from the U.S. Geological Survey, Washington, D.C. 



The present paper is a portion of a master's thesis presented to the 

 Graduate Faculty of the University of Virginia. Completion of the 

 study was supported, in part, by grants from the National Science 



University of Bridgeport, Bridgeport, Connecticut. 



