/ftemoirs of tbe flDuseum of Comparattve Zoolooi? 



AT HARVARD COLLEGE. 



Vol. XL. No. 8. 



NOTES ON THE CRAYFISHES 



IN THE 



UNITED STATES NATIONAL MUSEUM 



AND THE 



MUSEUM OF COMPARATIVE ZOOLOGY 

 WITH DESCRIPTIONS OF NEW SPECIES AND SUBSPECIES 



TO WHICH LS APPENDED 



A CATALOGUE OF THE KNOWN SPECIES AND SUBSPECIES. 



BY 



WALTER FAXON. 



With Thirteen Plates. 



CAMBRIDGE, U. S. A.: 



prtnteb for tbe /Cuseum. 



July, 1914. 



