UESUS SPELuEUS. 93 



preceding, by a hole pierced above the internal condyle for 

 the passage of the ulnar artery."* 



Whatever may be deemed the value of the character of 

 the perforation of the inner condyle, I can affirm that it 

 derives no accession from the other differences manifested 

 by the figure in Hunter's memoir, which Cuvier supposed 

 to be of a fossil Bear ; that figure having been, in fact, taken 

 from the imperforate humerus of an old Polar Bear, inserted 

 in the plate (pi. xx. Phil. Trans. 1794), and placed above the 

 figure of the true fossil humerus in order to illustrate the 

 differences between the recent and fossil species. The bone 

 of the Polar Bear was placed by Hunter in the same drawer 

 with two humeri of the Cave Bear (ITrsus spelaus), from 

 Gailenreuth, which it exceeds in size, and which are the 

 identical specimens alluded to in the following passage of 

 Hunter's Memoir : " These are two ossa humeri rather of 

 less size than those of the recent White Bear." Hunter does 

 not allude to any other differences, probably intending these 

 to be illustrated by the figures. These figures, in fact, show 

 that the humerus of the White Bear (Ursus maritimus, 

 fig. 31) is broader at both extremities, and thicker in pro- 

 portion to its length. The supinator ridge forms an angle 

 instead of being continued down wards, in a gentle convex 

 curve ; the internal condyle is much thicker and stronger, 

 where it bounds the olecranal cavity, and it extends inwards 



* " On trouve deux sortes d'humerus, tons deux appartenant a des Ours, et 

 cependant fort differens 1'un de 1'autre, John Hunter les a deja representes (Phil. 

 Trans. 1794, pi. xx.) ; mais depuis on n'a insist^ dans aucun ouvrage sur leur 

 difference. La deuxieme sorte d'humerus de ces cavernes, pi. xxv. fig. 4, 5, 6, et 

 7, m'est connue par un 6chantillon bien entier que notre Museum possede, par la 

 gravure de Hunter, et par le dessin que je dois a feu Adrien Camper d'une por- 

 tion qui en comprenoit les trois quarts inferieurs. Elle differe eminemment de la 

 prec6dente par un trou perce au dessus du condyle interne pour le passage de 

 1'artere cubitale. (Vby. a, fig. 4 et 5.)" Ossemens Fossiles, 4to. 1823, torn. iv. p. 

 362. 



