656 

 4031. The left os innominatum. 4032. The right femur. 



4033. The right tibia. 4034. The left tibia. 



4035. The left patella. 4036. The left fibula. 



4037. The skeleton of a female Long-lipped Bear (Ursus labiatus). 



This has the same number of true vertebrae (27) as the Ursus americanus (No. 4013), but 

 free ribs are articulated to fifteen of these, leaving five ribless or lumbar vertebrse : the num- 

 ber of anchylosed or sacral vertebrse is 5 ; that of the caudal vertebrae, 10. The met- and 

 an-apophyses are distinct on the twelfth dorsal, diverge and increase on the succeeding dorsals, 

 the metapophyses continuing throughout the lumbar series ; the anapophyses, after under- 

 lapping the prozygapophyses of the first and second lumbar, rapidly subsiding. The first 

 and second incisors (*' 1 & i 2) are lost, and the socket of i 1 is obliterated, in the upper jaw. 



Purchased. 



4038. The skull of a male Long-lipped Bear (Ursus labiatus). 



The frontal region is more elevated than in the male Ursus brevirostris (No. 4044), and 

 the facial portion of the skull is longer, but the chief difference is seen in the much smaller 

 proportion of the molar teeth, and the complete obliteration of the sockets of the first upper 

 incisors (i 1). The bony palate is also broader and flatter, and terminates in an almost 

 straight line posteriorly. In the interspace between the canine and last premolar (p 4) there 

 are three sockets in both the upper and lower jaws : the third (p 3) in the upper jaw, and 

 the second (p 2) and third (p 3) in the lower jaw, indicate the division of the fang in those 

 rudimental premolar teeth *. 



Presented by Sir Everard Home, Bart., V.P.R.S. 



4039. The skull of a female Long-lipped Bear (Ursus labiatus). 



It is much smaller than that of the male, and the frontal region is not elevated, but it 

 shows the same diminutive proportions of the molar teeth, and the same proportions of the 

 premolars, the third of which has two fangs in both the upper and lower jaw. The sockets 

 of the first upper incisors (i 1) are equally obliterated in this skull, and the bony palate has 

 the same relative breadth and configuration of its posterior margin. 



Mus. Brookes. 



* This specimen is referred to by Cuvier (Ossemens Fossiles, 4to, torn. iv. p. 334) in the following 

 words : " La tete du Museum des Chirurgiens donnee pour celle de 1'ours qui avait e*te pris pour un 

 paresseux (U. labiatus) me paroit diffe"rer de celle de Java. Outre le plus grand espace entre les 

 canines et la serie continue des molaires, on voit que c'est surtout entre les apophyses orbitaires que le 

 front y est bombe", et que la ligne de profil devient concave a la racine du nez." 



