2. TjKsus. 229 



smaller and narrower in the oldest one. Nasal bones elongate, nearly 

 to a line in middle of orbit. Length of the hinder grinder in all 

 long, about 1| inch. 



The skull collected by Mr. Douglas and sent to the Zoological 

 Society is 14| inches long, from front teeth to end of condyle; 

 palate 7| inches long ; width at back of zygoma 8| inches ; width 

 of nose, at aperture of artery, 3| inches; length of last grinder 

 1| inch; length of suture of lower jaw 3|. The hinder nostrils 

 wide, 1| inch in widest part, rather narrower behind; length 3 

 inches. 



The skull of an old specimen that lived many years in the Tower 

 and in the Zoological Gardens, with some of the grinders and the 

 canines worn down. — The internal nostril is narrow, rather wider 

 behind than in front ; the front edge ovate. Length of the skull 

 below, from front cutting-teeth to end of condyle, 14 inches, of 

 palate 7^ inches ; width at back of zygoma 10 inches, of nose, at 

 hole for artery, 3^ inches ; length of suture of lower jaw 3| inches ; 

 width of nose-aperture 2 inches, rather higher than wide. 



9. Ursus (Danis) horriaceus. B.M. 



Ursus arctos? (Barren-ground Bear), Hichardson, Fauna Boreali- 



Americana (see Baird, Mamm, N. A. p. 229). 

 ? Ursus horribilis, var. horriaceus, Baird, N. A. Mamm. t. 80 (skull) ; 



Bep. Mexican Boundary. 



Hah. New Mexico, Sonora. 



This Bear, according to Sir John Eichardson, exhibits peculiarities 

 not found in the Grizzly Bear of the Pacific Coast. Dr. Spencer 

 Baird's figure represents a Myrmarctos. — Oray, P. Z. S. 1864, p. 691. 



Ursus horribilis, var. horriaceiis, Baird, Mexican Mamm. p. 24 

 {Sonora Grizzly Bear) is less than the Grizzly Bear of the Pacific Coast. 

 Head very broad ; ears and taU nearly equal ; fore claws twice as long 

 as the hiader ones. General colour dark brownish, with the tips of the 

 hairs much lighter, of a dirty amber-colour ; no distinct indications 

 of dark stripes on back and sides. 



Hab. Los Nogales (Dr. Kennerly). 



c. Short-clawed American Bears. Fur short, uniform. Front claws mode- 

 rate, not much longer than the hind ones. Hind feet short. Upper 

 tubercular m.oderately long,, narrowed behind. Euaectos. — Gray, 

 P. Z. S. 1864, p. 691. 



American Bear, Gray, Ann. PMl. 1825. 



10. Ursus (Euarctos) americanus. B.M. 



Fur entirely uniform throughout, either black or brownish ; hair 

 darkest towards the tips ; nose brown ; feet moderate ; fore claws 

 not twice as long as the hinder. 



[Jraus americanus, Pallas, Sjnc. Zool. ; Schreb. Saugeth. t. 141. f. B. 

 Ours (noir) d'Amerique (U. americanus), Cuvier, MSiag. Mm.; Ann. 



