Vol. XVIII, pp. 79-82 February 21, 1905 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF THREE APPARENTLY NEW ' 



SPECIES OF MAMMALS. 



BY D. G. ELLIOT, F. R. S. E., Etc. 



Canis pambasileus^ sp. nov. 



AUTOCRAT TIMBER WOLF. 



Ti/pe from Sushitna River, region of Mount McKinley, Alaska. No. 

 13,481, Field Columbian Mns., Chicago. 



Generiil characters. — Color from nearly uniform black to white and black 

 in various mixtures. Skull : Size larger than those of timber wolves of 

 Canada or United States ; ridge of sagittal and occipital crest nearly on a 

 level with frontal and with only a very sHght descent at occiput and very 

 deep at that point ; maxillae very broad and rounded posteriorly at junction 

 with the frontals, much broader than in C. occidentalis ; nasals pointed 

 posteriorly but considerably broader than those of southern timber wolves ; 

 premaxillae extending considerably over one-half the length of the nasals, 

 while in C. nccidentalh in some cases this bone does not reach over one 

 third the length of the nasals and occasionally not even that length ; inter- 

 temporal width considerable, with a deep median depression between the 

 frontals ; the basisphenoid is very broad, and the postglenoid processes 

 very wide and flattened ; the mandible is massive, heavy, very deep, and 

 of nearly uniform height on horizontal portion, with the inferior outline 

 nearly straight, very different from the curving outline of the mandible of 

 C. ocridealalis ; the coronoid process is very broad, high, of nearly equal 

 width throughout, and with the posterior outline nearly straight, not curv- 

 ing like that of the southern species ; teeth in both jaws large and heavy, 

 exceeding in size those of C. occidentalis in the same proportion as do the 

 skulls. 



* ira/i/3a<7-r\ei)s — an absolute monarch. 



12-Pkoc. Biol. Soc. Wash., Vol. XVIII, 1905. (79) 



