MKHKIAM: Till'] FAUNA OF RANCIIO LA I'.RKA. 



227 



an uncommonly deep depression. The foramen ovale and the posterior opening 

 of the alisphenoid canal are also situated very near together, and are usually 

 in a distinct common depression. The situation of these foramina in this species 

 is approximated in some of the Recent wolf species, but the openings are not 

 often so nearly united in the Recent forms as to approach the extreme of 

 variation here. 



MEASUREMENTS OF SKULL 



Length, anterior end of premaxillaries to posterior end 

 of occipital condyles 



Length, anterior end of premaxillaries to anterior end 

 of posterior nasal openings 



Width across nose, measured between outer sides of 

 bases of canines 



Width, measured between outer sides superior sec- 

 torials 



Width across zygomatic arches 



Least diameter between superior borders of orbits 



Width between postorbital processes of frontals 



Length from a line drawn between posterior borders of 

 glenoid fossae to posterior end of occipital con- 

 dyles 



Length, anterior end of left ramus of mandible to 

 middle of condyle 



Height of lower jaw measured between summit of cor- 

 onoid process and inferior side of angle 



Height of lower jaw below hypoconid of M t 



Height of lower jaw below protoconid of P 3 



Thickness of lower jaw below protoconid of M t 



g 

 -3 

 .3 

 - 



282 mm. 



155 



67.3 



54 

 230 ap 



91.3 

 39.7 

 36.9 

 20.3 



267 



141 



58.5 



57 

 210.5 



87 

 35.3 

 32.5 

 19.3 



'= 



r. - 

 O c. 



250 

 131.5 

 52 



52 



202 



85.7 

 30.6 

 31.9 

 14.9 



(a) No. 10856. 

 (6) No. 10834. 

 ap approximate. 



(c) No. 984, Univ. Calif. Mus. Vert. Zool. 



(d) No. 11257. 



223 

 119 

 50.2 



52 



178 



82.5 

 29.8 

 24.5 

 16 



PERMANENT DENTITION 



Superior Dentition. The incisors of the upper jaw (tig. 4) are not more 

 noticeably crowded in specimens 10828 and 10856 than in the modern Alaskan 

 wolves. 



I 1 is not materially different from that in the large modern wolves. On I 2 

 the basal lobe on the median side is small or wanting and there is a second 



