RODENTIA SCIURINAE CYNOMYS GUNNISONII. 



337 



the summer specimens exhibit no trace whatever of it. The arctomys leivisii of Auduhon and 

 Bachman come much nearer in point of color to the description of Lewis and Clark. It may 

 he that there is a permanently reddish species on the Columbia, and, as I have already stated, 

 I consider it by no means improbable that Captain Beckwith's specimen may be specifically 

 different from those of Lieutenant Bryan, which would make three in all. 



List of specimens. 



Probably too short. 



* Skin stretched. 



43 L 



