24 



TINITED STA1E8 AND MEXICAN BOUNDARY. 



The following table contains the measurements of the skull of this species as compared witlx 



those of P. hernandezii and F. lotor. 



Skulls of Procyon. 



Total length 



From intermaxillarifs to condyles 

 Greatest width 



Greatest heiglit al ove base of occiput 



Distance between orbits 



Nasal bones, width before 



Narrowest part of muzzle behind incisors 



U[>pcr incisors from front to molars 



Upper incisors from front to hinder margin of palate. 



Upper incisors, width between external edges 



Upper molars, length taken together • • . . 



Upper molars, least distance between 



Between line of orbital processes to occiput 



Between line of orbital processes to end of nasals. • . • 

 Between line of orbital processes to end of Intermaxillary 

 Orbit to end of intermaxillary .».. 



Procyon hernandezii. 

 No. 1837. Mata- 



m ras. 



Inches. 



4.80 



4.67 



3.17 



1.50 



1.08 



.GO 



1.08 



1.20 



3.00 



.70 



• 93 



.87 



3.10 



1.60 



2.40 



1.67 



l» 



l.UO 

 .97 

 .66 

 .31 

 .22 

 .12 

 .22 



.62 

 .14 



.19 



.18 

 .64 

 .33 

 .50 

 .34 



Procyon lotor. No. 

 &a8. New 



lOOths of 11 Inches, 

 length. 



4.50 



4.33 

 2.94 



1.45 



.87 



.55 



.97 



1.20 



2.76 

 .63 



.80 

 .70 

 2.87 

 1.47 

 2.20 

 1.50 



1 



lOOths of 



lengUi. 





1.00 



.96 

 .55 

 .32 



.19 

 .12 

 .21 

 .26 

 .61 

 .14 

 .17 

 .15 

 .63 

 .32 

 .48 

 .34 



II 



I I 



Pi'ocyon hernandezii^ var. 

 mexicana. No. ?J??f-. 



Espia, Chihuahua. 



Inches 



4.40 

 4.30 



1.50 

 .93 

 .43 

 .96 



1.13 



2.60 



.60 



.90 



.66 

 9.85 



1.43 



2.20 

 1.50 



lOOths of 

 length. 



1.00 

 .97 



.34 

 .21 



.09 

 .21 

 .25 

 .59 

 .13 

 .20 

 .15 

 .61 

 .32 

 .50 

 .34 



1051. Espia, Sonora. April, 1855. Dr. Kennerly. 



23. UESUS HOKEIBILIS, var. HORRIAEUS, B air d.— Sonora Grizzly Bear. 



Size less than the grizzly of the Pacific coast. Head very broad. Ears and tail nearly equal. Fore claws twice as long as 

 hinder ones. General color daik brownish, with the tips of the hairs much lighter, (of a dirty amber yellow.) No distinct 

 indication of dark stripes on the back and sides. 



A single skin of this animal was collected by Dr. Kennerly, at Los Nogales, and brought 

 home. Owing, however; to the excessive heat of the country^ the skin appears to have been 

 almost burnt, and contracted to such a degree as completely to obscure the proportions. In 

 its present condition^ it is less in size than the average of black bears, while originally the body 

 was nearly as large round, and as long as that of a year old colt. 



The prevailing characters of the animal are essentially those of the grizzly of the PaciSc 

 coasfcj in the large feet, elongated claws of the fore foot, &c. The ears are rather short, and 

 completely concealed among the adjacent hair. The tail is very short, and entirely concealed ; 

 about as long as the ears. 



The feet are very broad and large ; the fore claws much larger than the hinder. The longest 

 (removed from the skin) measures four inches along the convexity, half an inch of this, however, 

 isjmplanted in the skin. The fingers are of nearly equal length, the first and fifth rather 

 shortest, especially the former or thumb ; the central claws are longest. The palm is naked, 

 composed of a soft, highly papillose skin. There is a large central pad, rather broader than 

 long, covering most of the foot ; behind this, near the] exterior edge, is a small circular pad, 



