Bear from the Cromer Forest-bed. 207 



here adopted. Frcudenbevf^ considers tliat probably both 

 U. den'nt</eri and U. saviui are dorivQd from U. etruscus or 

 some nlated I'urm, and that U. savuii iui\y be the ancestor of 

 U. sjyelaus. 



Among the specimens lent by ]\Ir. Savin there is also a 

 right maxilla of a snial 1 bear which is of great interest. The 

 canine, ;>m^, m^, and m" are picsent, and the socket for a 

 small pni^. It is peculiar for the great depth of the maxilla 

 between the antorbital foramen and the cheek-teeth, and the 

 animal must have had a. very short deep muzzle. It is much 

 loo sn)all to fit any of the maitdibles preserved, but at the 

 same time the teeth show the complex tuberculation charac- 

 teristic of the Spelaiarctine group, so that it may indicate the 

 existence of very small individuals of U. savini. The teeth 

 are quite unlike those of U. arvernensis. 



The dimensions of the teeth in this specimen (in milli- 

 metres) are : — 



Cnuine, length at base of crown 18, width at base of crown 15. 

 Pm\ length 17, width 12. 

 . M\ „ 25, „ 17. 

 M-, „ 36-5, „ 18. 



Too much importance must not be attached to this specimen, 

 as it seoms to be much restored ; but if it actually belongs to 

 a small Ursus savini, it indicates that that animal had a deep 

 i-kull with a short muzzle, which agrees with the short 

 diastema in the mandible. 



A number of limb-bones are preserved: these, especially 

 the tibia, indicate that this species was a heavily built short- 

 legged animal. In Ursus apelceus also the limbs are rela- 

 tively short. 



A left maxilla of a very large bear is included among the 

 specimens lent by Mr. Savin (no. 745, Ovcrstrand). The 

 two molars are well })reserved, but somewhat worn ; these 

 dimensions are : n^^ length 30 mm., width 21 ; »^^ length 

 50 n)m., width 23'5. The posterior lobe of Wg is remarkably 

 long and narrow ; the tuberculation of the crowns of the 

 molars seems to have been less complex than usual in Ursus 

 spelaxis. It is just possible that this maxilla may belong to a 

 very large individual of U. savini, but it is far too large to be 

 associated with any of the mandibles in the Collection ; 

 possibly it belongs to the bear referred to by Newton as 

 Ursus Jerox-f Of silis (?). More material is necessary before any 

 certain determination is possible. 



