324 FAUNA ANTIQUA SIVALENSIS. 



with the corresponding tooth of the Hysena. The teeth of 

 the oj)posite sides are unequally worn. 



The two rear or tubercular molars are also marked in their 

 form. Instead of being oblong, as in all the other species, 

 with their length greater by a third than the breadth, they 

 are square in ovir fossil. The penultimate, if anything, is 

 longer than the rear one, the reverse of which holds in the 

 rest of the genus. It has two tubercles at its outer side, as in 

 other species ; at the inside it is somewhat shortened in 

 length, and the cleft between the tubercles is nearly obsolete, 

 so as to^ give the appearance of one large tubercle. In this 

 resjject there is a remote analogy with the corresponding tooth 

 of the Dog, and a deviation from the usual type of the Bears. 

 The last tubercular presents as great a contrast in form with 

 that of the other species as the carnassier tooth does. At its 

 outer side there are two tubercles to the crown smaller than 

 in the penultimate, as is normal in the genus, and at its 

 inner side a ridge indistinctly divided by three slight fui-rows. 

 There is no heel to the tooth ; the crown is square, and the 

 only part which can be considered as representing a heel or 

 spur ^ is a flatfish disc at the inside, alternate with the pos- 

 terior outer tubercle, and partly ojjposed to the rear portion 

 of it. None of the rest of the Bears have the last tubercular 

 in the upper jaw square, or vnthout a crenulated spur added 

 on to the rear of it. 



Our specimen of the lower jaw (figs. 3 & 4) is deficient in the 

 incisors and in the protruded portion of the canine. It is 

 broken off just where the latter emerges from its socket. 

 The section of the embedded j)ortion of the canine gives 1-6 

 inch of vertical dimension and -95 transversely. The molars 

 are six in number. The two anterior false molars and the 

 last tubercular have dropped out, but the sockets remain 

 unobliterated. The anterior false molar was close behind 

 the canine, and there is not space for another to have been 

 inserted between. The second was close to the first and 

 almost in contact with the third false molar. This latter, 

 like the carnassier of the upper jaw, is of large size, compared 

 with the same tooth of the other species, and distinctly three- 

 lobed ; this is another peculiarity, and further supports the 

 analogy shown by the upper carnassier with the Hysena, to 

 the second false molar of which it bears a considerable resem- 

 blance. The anterior and posterior lobes are small, the 

 middle point being chiefly developed. The antepenultimate 

 or carnassier is so defined ^ as to give no indication of form to 

 notice, except its length. The penultimate or first tubercular 



• Notelyy Br.F. — 'Posterior or talon 1 ^ Underlined in pencil by Dr. F. — 

 lobe.'— [Ed.] I [Ed.] 



