MERRIAM: THE FAUNA OF RANCHO LA BREA. 



225 



Figs. 3 and 4. Cants dims Leidy. Skull, no. 10834, X M>- Fig. 3, posterior view; fig. 4, inferior view. Rancho 

 La Brea Beds. 



Percentages of width of the skull at various points in relation to basal length measured from 

 the anterior end of the premaxillaries to the posterior side of the occipital condyles are as follows : 



Width across palate, measured between outer sides of 

 superior sectorials 



Width between most nearly approaching points on 

 upper border of orbits 



Width between postorbital processes of frontals 



Width across zygomatic arches 



C. dirus(a) C. pambasileus(ft) C. latrana 

 38.1% 34 % 32 % 



22.7% 

 33.3% 

 62 % 



20.8% 

 27.2% 

 55.6% 



16.5% 

 24 % 

 59.4% 



(a) No. 10856. All numbers, unless otherwise noted, are from the series of the University of California 

 Collections in Vertebrate Palaeontology. 



(6) No. 984, Univ. Calif. Mus. Vert. Zool. From Susitna River, Mt. McKinley region, Alaska. This is 

 according to Elliot (Field Columb. Mus. Publ., Zool. ser., vol. 6, p. 374) the largest Recent species of the 

 North American wolves. 



