104 Dorothy Bate — A Bone Cave on the River Wye. 



Neomys ( = Crossopus) fodiens. — One upper jaw of the water-shrew 

 was found which still retained its full number of teeth. Its remains 

 have occurred in the Norfolk Forest Bed. 



Microtus amphibius. — Jaw-bones and portions of skulls of the water- 

 vole were numerous in the cave earth. Many of the rami were 

 preserved in an almost perfect condition. Its remains have been 

 found in Pleistocene deposits and in a number of caves in England. 



Microtus agrestis. — Remains of the field-vole were more plentiful 

 than those of any other of the species found in the cave. Similar 

 remains have been found in many caves in England. This vole 

 is still living in Britain and extends over the middle and north of 

 Europe, being commoner in the northern part of its range. 



Microtus ratticeps. — One or two portions of skulls and about 

 a dozen rami of the northern vole were found in this cave, and 

 agree with recent specimens in the British Museum. In a few of 

 the lower jaw-bones the teeth resemble the figure of M. gregalis 

 given by Dr. Nehring in a paper published in 1875, but the presence 

 of intermediate forms between this and the typical M. ratticeps makes 

 it probable that all in this series ought to be referred to the latter 

 species. Fossil remains of M. ratticeps have been found in England 

 in the river deposit at Fisherton, in caves in Somersetshire, and in 

 the Ightham fissure in Kent. It no longer occurs in Great Britain, 

 but is now found in Northern Europe and Siberia. 



Fig. 1. — Palatal view of skull of Ochotona {Lagomys) pusillus. 



Fig. 2. — Dorsal aspect of part of skull of Dicrostonyx [Myodes] torquatus. 



Fig. 3. — View of upper molars of Dicrostonyx {Myodes) torquatus. 



Figs. 4-6. — View of lower molars of Dicrostonyx {Myodes) torquatus. 



Figs. 7, 8. — View of (7) lower and (8) upper molars of Lemmus {Myodes) kmmus. 



Microtus arvalis. — Several jaw-bones, upper and lower, may be 

 referred to this species. Their upper teeth are easily distinguished 

 from those of M. agrestis by the character of the second molar, but 

 the lower teeth of these two species resemble each other very closely. 



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