182 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. XI. 



S. douglasi and S. d. mollipilosits appear to intergrade from Crescent 

 City, California and Goldbeach, Oregon, for specimens from these 

 localities may be attributed to either and are typical of neither form. 

 The tail fringe varies in color from yellowish white to buff in the vari- 

 ous individuals, but never as white as in mollipilosus, nor .as deep in 

 hue as in douglasi. At Marshfield typical douglasi occurs, and the 

 Crescent City specimen, 2 from Goldbeach and i from Chetco, I have 

 called douglasi as the tail fringe was darker than in the others. The 

 Mendocino specimens were taken in July, and the pelage is worn and 

 consequently is grayer than the fall pelage represented by the others, 

 and at that season, except for the tail, there is not much difference to 

 be observed between the forms. Writing of S. d. mollipilosus, Mr. 

 Heller says "it is said to extend northward to the Rogue River, and 

 perhaps it does inland in the Transition zone, but along the coast in 

 the Canadian zone the Klamath marks its northern limit." 



TAMIAS. 



Tamias townsendi ochrogenys. 



Tamias townsendi ochrogenys. Merr. , Proc. Biol. Soc., Wash., 

 1897, p. 206. Elliot, Syn. N. Am. Mamm., 1901, p. 71. 



Forty-four specimens: n, Mendocino (topotypes) ; 10, Eureka; 

 12, Requa; i, Crescent City, California; 9, Goldbeach; i, Agness, 

 Oregon. 



Dr. Merriam separated this form mainly on account of its buff 

 cheeks and underparts, and the absence of the black stripe between 

 eye and nose. The Mendocino examples are topotypes and answer to 

 Dr. Merriam's description, except two, taken as we're the others, in 

 July, which have the underparts grayish white with the barest suspicion 

 of a buff tinge. Otherwise they are like the other specimens from the 

 same locality. One example from Eureka (August), and two from 

 Goldbeach (September and October), are like the July Mendocino 

 specimen, but all the rest from Eureka, Requa, Crescent City, Gold- 

 beach, and Agness (July, August, and September), are in what I con- 

 sider the post-breeding pelage, being much brighter, the dorsal stripes 

 much more distinct, and the rumps in the majority lighter and grayer. 

 There is a certain amount of individual variation perceptible among 

 the specimens, as is usually seen in all species of Tamias at different 

 seasons of the year, such as the depth of coloring on the sides of the 

 body, and of the buff on the underparts, and the sharpness and clear- 

 ness of the dorsal stripes. 



