1908.] 



Allen, Mammalogical Notes. 



585 



from Mr. Grant has no near relationship with the coyotes of the Saskatche- 

 wan plains, being not only very much smaller, but quite different in color 

 and in dentition. As would be expected, it is, on the other hand, closely 

 related to Can-is lestes Merriam, of the trans-Rocky Mountain districts. 

 The present specimen is apparently an old female, and differs from an old 

 female of C. lestes, from Shuswap, B. C., in being smaller, and slightly in 

 other characters, and may be separable as a northern form of lestes. Al- 

 though the differences between these two skulls are quite appreciable, it 

 would be rash, in the absence of more material for comparison, to recognize 

 these differences in nomenclature. The subjoined measurements of three 

 female skulls the Alaska specimen, a female lestes from Shuswap, B. C., 

 and one from Maple Creek, Saskatchewan (young female, too young to be 

 fairly comparable with the others, but the only one available) show the 

 Alaska specimen to be the smallest of the three, and illustrate the wide 

 difference in the size of the teeth between the lestes and latrans types, as 

 regards not only the length of the premolar-molar series, but of individual 

 teeth. 



Measurements of Skulls. 1 



Total length 



Condylo-basal length 



Basal length 



Basilar length 



Palatal length 



Interorbital breadth 



Postorbital breadth 



Zygomatic breadth 



Mastoid breadth 



Length of upper premolar-molar series. . 



Length of p 4 -m 2 



Length of upper carnassial 



Length of lower premolar-molar series. . . 



Length of m,-m 3 



Length of m l 



The Alaska specimen is much darker than Saskatchewan specimens, 

 and less fulvous; but the ears, nose, and anterior surface of the limbs are 



i 1. Am. Mus. No. 28197, 9, Alsek River, Alaska; Madison Grant. 



2. U. S. Nat. No. 72876, Q, Shuswap, B. C.; Biological Survey. 



3. Am. Mus. No. 28281, 9, Maple Creek, Saskatchewan; E. E. Baynton This is a Quite 

 young specimen, as shown by the absence of ankylosis and the rudimentary condition of the 

 sagittal and occipital crests. While not full grown as regards the size of the skull the dentition 

 is fully developed. 



