PEROMYSCUS. 51 



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Peromyscus maniculatus dementis Mearns. 



Peromyscus texanus dementis Mearns, Proc. U. S. Nat. Mus., 

 XVIII, 1895, p. 446. 



Type locality. San Clemente Island, Los Angeles County, Cali- 

 fornia. 



Geogr. Distr. Outer islands of the Santa Barbara group, off the 

 coast of southern California, including San Clemente, Santa Barbara, 

 San Nicolas, Santa Rosa, and San Miguel Islands. 



Genl. Char. Similar to P. m. gambeli but larger and darker. 



Color. Upperparts drab tinged with burnt umber on lower por- 

 tion; top of head drab-gray, ochraceous-buff lateral line; underparts 

 white; tail dark above, white beneath; hands and feet white; ears 

 black. Ex type in United States National Museum. 



Measurements. Total length, 177; tail, 77; hind foot, 21; ear, 17. 

 Skull: Occipito-nasal length, 25.5; Hensel, 20; zygomatic breadth, 

 12.9; intertemporal width, 4; length of nasals, 9.6; length of upper 

 molar series, 3.8; length of mandible, 12.7; length of lower molar 

 series, 3.7. Ex type in United States National Museum. 



Peromyscus maniculatus magdalenae Osgood. 



Peromyscus maniculatus magdalence, Osgood, N. Am. Fauna, No. 28, 

 1909, p. 101. 



Type locality. Magdalena Islands off west coast of southern Lower 

 California, Mexico. 



Geogr. Distr. Magdalena Islands and a narrow strip of the adja- 

 cent mainland of the Peninsula of Lower California. 



Genl. Char. Similar to P. m. geronimensis but larger, tail longer 

 and color darker. 



Color. Upperparts ochraceous-buff mixed with dusky; face and 

 head paler; underparts creamy white; tail above dusky, beneath 

 white; feet and hands white. Ex type in United States National 

 Museum. 



Measurements. Total length, 201; tail, 87; hind foot, 5.9 (skin). 

 Skull: Occipito-nasal length, 27; Hensel, 20.7; zygomatic width, 

 13.6; intertemporal width, 4.5; length of nasals, 10; length of upper 

 molar series, 4; length of mandible, 12.3; length of lower molar series, 

 4.4. Ex type in United States National Museum. 



Peromyscus maniculatus hollisteri Osgood. 



Peromyscus maniculatus hollisteri Osgood, N. Am. Fauna, No. 28, 

 1909, p. 62. 



Type locality. Friday Harbor, San Juan Island, San Juan County, 

 Wash. 



