URSUS. 467 



sub-anterior outer cusp, bounded on the inside by three marginal tuber- 

 cles of small size, but very distinctly defined. The canine is compara- 

 tively small ; antero-posterior diameter of base of crown where enamel 

 begins, 0"8 in. ; transverse ditto, 0"6 in. ; height of remains of crown, 

 l - 02 in ; apex slightly abraded. 



Ursus spelceus has an enormous canine in proportion. 



III. — Note. Upper Maxillary of Ursus in Collection of Eev. 



S. W. King. 



This specimen is a right maxillary, comprising the last two molars in 

 situ, with the empty fang-pits of the antepenultimate, of an older animal 

 than above jaw in the Norwich Museum, as is clearly proved by the 

 crown of the penultimate being ground down to a uniformly smooth 

 disc. The base of the zygomatic process and portion of palate, together 

 with infra- orbitary foramen, are present; all rest broken off. Di- 

 mensions : — 



Joint length of 2 molars, crowns, 2'4 in. Length of crown, last molar, l - 5 in. 

 Greatest width in front, 0-8 in. Ditto behind, 065 in. Length of penultimate, 

 0'95 in. Greatest width of ditto, - 75 in. 



The last molar corresponds very closely in relative dimensions with 

 those of the lower jaw in the Norwich Museum, and, as in it, the 

 unworn talon portion exhibits a very complex pattern. The teeth in 

 both are jet black, with a very bright vitreous polish. They would 

 seem to have been yielded by two different individuals of the same 

 species. 



The detached canine found along with upper jaw (detached) is of 

 comparatively small size, agreeing in this respect with canine of above. 



IV. — Note on Ursus from Deborah's Den. 



British Museum, July 22, 1862. — Comparison of lower jaw of Bear 

 from Deborah's Den, Gower. 1 



This specimen is a finely preserved and nearly perfect right ramus 

 of the lower jaw, entire from the incisive border to the condyle, and 

 defective only in a slight portion of the outer casing of the canine 

 alveolus. The posterior point of the coronoid is also slightly abraded, 

 and a small portion is broken off the point of the angular process. The 

 symphysial suture is shown throughout ; the three incisors had dropped 

 out, but the alveoli are distinctly shown ; the canine is also in situ, 

 slightly worn at the apex, which is somewhat truncated. 



Of the molar teeth, only one is seen in situ, viz. the (m. 2) penul- 

 timate, and it is not a little remarkable, that although the animal is 

 shown to have been a somewhat aged adult, there is not the slightest 

 indication that the last tubercular was ever developed. The surface 

 whers it ought to have been found was perfectly smooth, and on drill- 

 ing down into the dentary canal, not a trace of the tooth was found, 

 nor in the base of the coronoid. The same absence of the last tooth 

 sometimes occurs either on one or on both sides of the lower jaw of the 



' ' Deborah's Den ' was a cave disco- 

 vered by Col. Wood, at Gower, in the 

 autumn of 1861. It is situated about 



half a mile westward of Paviland Cave, 

 and contained numerous remains of Bear, 

 Wolf, &c— [Ed.] 



H H 2 



