1895. PROCEEDINGS OF THE NATIONAL MUSEUM. 447 



Santa Eosa (2 specimens) and San Clemente Island (38 specimens, 

 collected by myself and Mr. A. W. Anthony). The skins from Santa 

 Eosa Island are referred to the mainland form (P. t. medius), though 

 approaching P. t. dementis. This island race is much blacker than 

 P. /. medius, with a stronger, more reddish coloration, except on the 

 head, which is drab. 



Type. — No. 61117, U.S.N.M. (Coll. International Boundary Commis 

 sion). Adult male, from San Clemente Island, California. Collected 

 by Dr. Mearns, August 27, 1891. Original number, 3819. 



Descripiion of type. — Above drab anteriorly, strongly tinged with 

 burnt umber posteriorly; top of head, drab gray; ears black, with fiiint 

 hoary edging; feet and under surface, white; tail sharply bicolored. 

 Length, 177 mm.; tail vertebrae, 77; ear, 17; hind foot, 21. 



