22 



proportionately smaller size of the anterior and internal tubercle of the 

 penultimate molar tooth and its closer approximation to the last molar, 

 which is implanted by a single fang. 



From the bone-cave called Kent's Hole, near Torquay. 



Presented by Gerard Smith, Esq. 



109. A considerable portion of the left ramus of the lower jaw of the Cave 



Hyaena, with the canine and molar teeth. 



This fossil exceeds in size the corresponding portion of the jaw of 

 the Spotted Hyaena, which is the largest known existing species : the 

 posterior ridge of the second molar tooth is likewise broader, but no un- 

 equivocal specific differences can be distinguished. 



This specimen is from the cave B, at Oreston : it is figured at plate 

 12. fig. 9, of the Memoir by Messrs. Whidhey and Clift above cited. 



Presented by Sir John Barrow, F.R.S. 



110. The anterior part of the right ramus of the lower jaw of the Cave Hyaena, 



having two of the incisors, the canine and three of the molar teeth. 

 From the cave B, at Oreston. 



Presented by Sir John Barrow, F.R.S. 



111. A considerable portion of the left ramus of the lower jaw of the Cave 



Hyaena, with one incisor and the four molar teeth. This specimen, which 

 is from the bone-cave at Kirkdale, Yorkshire, so closely corresponds with 

 the specimen from Oreston, Plymouth, as to leave no doubt of the specific 

 identity of the ancient Hyaenas of these distant parts of England. 



Presented by John Gibson, Esq., F. G.S. 



112. A portion of the left ramus of the lower jaw of a younger specimen of 



the Cave Hyaena, containing the sockets of the three incisors, the canine, 

 and two molars. When compared with a specimen of corresponding age 

 of the Spotted Hyaena, the fossil presents a larger relative size of the first 

 molar, particularly of its posterior division, and also of the posterior ridge 

 of the second molar. The distance between the canine and the first 

 molar is greater in the recent than in the extinct species. 

 From the cave at Kirkdale, Yorkshire. 



Presented by John Gibson, Esq., F.G.S. 



