54-6 Bulletin American Museum of Natural History. [Vol. XIX, 



The color of the incisors, given also as a character, is very 

 variable, ranging from pale yellow to deep yellow. The 

 single specimen of saxamans of which external measurements 

 are given, from "a dry skin, "-considerably exceeds in size any 

 of the specimens from the Telegraph Creek region, but the 

 cranial measurements show that this difference is apparent 

 rather than real. 



At Telegraph Creek the bushy-tailed rats were "fairly 

 abundant " ; they were "trapped in the talus just beneath the 

 cliffs above Telegraph, and in several other rocky places." 

 At the camp at the head of the Shesley River (at timber-line) 

 none was secured and only one was seen. Only two were 

 taken on Level Mountain. Two were trapped at the camp on 

 Raspberry Creek, "beside a large rock in a dry flat, away 

 from timber." 



17. Evotomys wrangeli Bailey. WRANGEL RED-BACKED 



MOUSE. 



Evotomys wrangeli BAILEY, Proc. Biol. Soc. Wash., XI, May 13, 

 1897, 120. Wrangel Island, Alaska. 



Wrangel Island, 18 specimens (topotypes), June 25 to July 

 7, of which 6 are adults, 7 are nearly full-grown young, and 5 

 about half -grown. Four adult females measure as follows: 

 Total length, 145 (141-147); tail vertebrae, 33 (31-34); hind 

 foot, 19.6 (19-20.5); ear, 14.2 (13-15). The two adult males 

 are smaller, measuring respectively: Total length, 136, 138; 

 tail vertebrae, 30, 33; hind foot, 19.5, 20; ear, 15, 14.5. In 

 coloration they exactly resemble the females, showing that 

 they are fully adult. The nearly full-grown young (total 

 length 129-138) are much^ duller and darker, with much less 

 red on the back. 



1 8. Evotomys dawsoni Merriam. DAWSON RED-BACKED 



MOUSE. 



Evotomys dawsoni MERRIAM, Am. Nat., XXII, July, 1888, 649. 

 Finlayson River, Northwest Territory, Canada. 



Represented by 67 specimens, as follows: Telegraph Creek, 

 5 specimens, July 13, and August 4, 7, and 17; Cheonnee 



