MAY, 1903. A LIST OF MAMMALS ELLIOT. 185 



vated fields, and if any are present it is only where the brush is still 

 standing. The burrows are usually placed amid patches of ferns on 

 the rootstocks of which they subsist." 



FAM. 



PEROMYSCUS. 



Peromyscus texensis gambeli. 



Peromyscus texensis gambeli. (Baird), N. Am. Mamm., 1857, 

 p. 464. Elliot, Syn. N. Am. Mamm., 1901, p. 130. 



Twelve specimens: 8, Nicasio; 4, Petaluma. 



Peromyscus austerus. 



Peromyscus austerus. (Baird), Acad. Nat. Scien., Phil., 1855, p. 

 336. Elliot, Syn. N. Am. Mamm., 1901, p. 132. 



Fifty-nine examples: 16, Goldbeach; 2, Agness; 5, Grant's Pass; 

 3, Marshfield; 5, Scottsburg; 20, Gardiner; 6, Florence; 2, McCoy, 

 Oregon. 



There is considerable variation in the measurements among the 

 specimens of this series, averaging considerably larger than those 

 given in my Synopsis, which must be regarded as belonging to an 

 undersized individual. The smallest are from Grant's Pass, the meas- 

 urements of which range in total length, 154-179; tail vertebrae, 60-89; 

 hind foot, 21-22.5; ear, 16-18.5 a ^ adults; and the largest are from 

 Gardiner, 179-198; 86-101; 22-24; 18-20, with Goldbeach a close 

 second with 175-200; 85-100; 21.5-22.5; 18.5-20. The coloring also 

 varies somewhat, some being lighter than others, but it is a dark 

 colored species almost black in some specimens, making any light 

 shade conspicuous. 



Peromyscus perimekurus. 



Peromyscus perimekurus. Elliot, Pub. Field Columb. Mus., 1903, 

 in. p. 156, Zoology. 



Seven specimens: 5, Goldbeach; i, Florence; i, Agness. 



This form is distinguished from P. austerus by a larger size and 

 very long tail, and lighter coloring. 



Peromyscus oreas rubidus. 



Peromyscus oreas rubidus. Osgood, Proc. Biol. Soc., Wash., 1901, 

 p. 193. Elliot, Syn. N. Am. Mamm., 1901, p. 134. 



Forty -five specimens: 8, Mendocino (topotypes); 2, Point Reyes; 

 10, Eureka; 18, Requa; 7, Crescent City, California. 



