60 MR. G. BUSK ON THE ANCIENT OR 
Ill. Ursus. 
The Genista Cave has yielded a considerable number of bones of a species of Bear, 
all of which were procured from the deeper passages. They are completely fossilized, 
and thickly incrusted with hard ferruginous stalagmite. The principal specimens 
are :— 
1. A portion of the right maxilla (PI. V. fig. 3), extending from the anterior border 
of the first true molar to a short distance beyond the second, and containing both 
teeth quite entire though a good deal worn. Their dimensions are, m. 1 ‘93°70, 
m.2 1"5x°8. All the finer sculpturing is worn away ; and the third or posterior cusp on 
the outer border of m. 2 is entirely obliterated. What remains of the sides of the tooth 
indicates that the crown-surface must originally have been much compressed. 
2. The right mandible (Pl. IV. figs. 1, 2). This specimen comprises the whole of 
the horizontal ramus as far back as the angle, and showing the small inferior wncinus?. 
The ascending ramus, including the condyle, coronoid process, and angle with the 
“ crochet” 2, are wanting, having evidently been detached before the bone was invested 
with stalagmite. The remainder of the jaw is complete. It includes the following 
teeth or empty alveoli :— 
The empty alveoli of the three incisors ; the fang of the canine, broken off level with 
the border of the alveolus ; the empty alveolus of the first premolar (pm. (pm. 1) ; the absorbed 
alveolus of the third premolar (pm. 3), which was probably shed from violence ; the fourth 
premolar (pm. 4) and first molar (m. ™m. 1) entire, and corresponding in amount of wear 
with the maxillary teeth above ae and the empty alveolus of the last molar 
(m.2). The length of the ramus from the incisive border to the extremity of 
the uncinus is 8-35, its vertical diameter immediately behind the last molar 2-5, and 
at the diasteme 1’-9; the length of the diasteme is 1’-7, and of the symphysis 3""0. ‘The 
teeth or sockets afford the following measurements :— 
in. 



AT CO ee Sen ee eB a. val mae Oca Te 
PR Lee A Osa pel wine or nh 2 a Var ATOR AD 
Rilvigh)| ew scate. GEe TI och Sas ee LOT Sa0 
Ge. 4 bee Shae as ene 
m. 3 ee es oes, he ID EOO 
Molar senitssa a ee eer) ca ORL 
The lower border of the bone is thick and rounded but nearly straight. 
3. The third specimen is about half the right ramus of a young animal, in which 
the canine is only partly protruded from the alveolus. It contains that tooth entire, 
* « Crook-process”’ of Falconer. * « Angular process” of Falconer. 
