24 



119. A portion of the left ramus of the lower jaw of a young Cave Hyaena, 



containing the sockets of the deciduous molars ; the crowns of the per- 

 manent molars are still concealed. 



From the cave at Kirkdale, Yorkshire. 



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



120. A portion of the left ramus of the lower jaw of a young Cave Hyaena ; 

 it contains the last deciduous molar, and the half-formed crowns of the 

 penultimate, and last true molars which had not risen from the jaw ; 

 it may he observed that the deciduous molar has a more complicated 

 crown than its successor, corresponding in form with the last true 

 molar, and not with the penultimate one which is about to take its 

 place. 



This specimen is from the cave B, at Oreston, and is figured in 

 Messrs. Whidbey and Clift's Memoir, pi. 10. fig. 7, loc. cit. 



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



121. Two right incisors of the upper jaw of the Cave Hyaena. 



From the cave at Kirkdale, Yorkshire. 



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



122. Two left incisors of the upper jaw of the Cave Hyaena. 



From the cave at Kirkdale, Yorkshire. 



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



123. The symphysial end of the right ramus of the lower jaw of the Cave 



Hyaena, with the middle incisor. 



From the cave at Kirkdale, Yorkshire. 



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



124. The two outer incisors of the upper jaw of the Cave Hyaena. 



From Oreston. Presented by Sir John Burrow, F.R.S. 



125. The two outer incisors of the left ramus of the lower jaw of the Cave 



Hyaena. 



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



