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HYZNA SPELAEA. 157 
Subjoined (fig. 60) is a great proportion of the lower jaw, 
with the dentition complete, excepting the incisors: it 
corresponds with the abovecited cranium in size. 
Fig. 60. 
Lower jaw and teeth, yena spelea, 4 nat. size. Kent’s Hole. 
3 
Several characteristic specimens of the Hyena spelaa 
from this cavern are preserved in the collection of Dr. 
Buckland ; and some very interesting ones were obtained for 
the British Museum, at the sale of the collection of the late 
Mr. Mae Enery. Among these is the anterior part of the 
lower Jaw, shewing a malposition of the second permanent 
premolar on the left side; the corresponding deciduous 
tooth is retained, worn down to the stumps, and its succes- 
sor projects, external to it, from the outer side of the jaw. 
Here, as in the Kirkdale and Oreston caves, the jaw of a 
young Hyena was found, which shews the deciduous and 
permanent teeth (fig. 61). The point of the permanent 
canine has just begun to protrude from the socket ; the 
three deciduous molars are retained, the last having the 
form of the sectorial tooth: these are succeeded and dis- 
placed by the first three molars of the adult, which have 
the conical form: the permanent sectorial tooth, s, is deve- 
loped behind these, and rises behind the deciduous sectorial, 
which it does not displace ; it is developed earlier than the 
anterior permanent molares. 
