ARVICOLA AGRESTIS. 



207 



ing surface of the three lower molar teeth is given at i, 

 and the jaw a, is figured of the natural size. These speci- 

 mens have all the characters of the fossils of the extinct 

 Mammalia of the cave, Kent's Hole, from which they were 

 obtained by Mr. Mac Enery ; they are now in the British 

 Museum. 



A bank covering the foundations of an ancient Roman 

 fortification near Cirencester, was pointed out to me by 

 Mr. Brown, who has interested himself in the collection of 

 the fossils of that neighbourhood, as being remarkable for 

 the number of minute jaws and other bones which it con- 

 tained : these were chiefly remains of Field-voles, mixed 

 with those of Shrews ; and, though they do not belong to 

 the category of fossils, the fact seems worthy of notice on 

 account of the extraordinary abundance in which such bones 

 and teeth are occasionally found accumulated in similar 

 superficial situations. 



