282 



MICROTIN.E 



structure. Temporal ridges feebly developed, and widely separated 

 in the interorbital region. Post-orbital squamosal crests weak or 

 moderate. Palate much like that of Evotomys, ending behind in a 

 simple transverse shelf, which is, however, sometimes furnished 

 with a weak median process ; post-palatal lateral pits well de- 

 veloped, their inner edges effecting a junction with the dorsal surface 



Fig. 3a 



Fig 5a 



Fio. 8Ga. 



a. Right upper molars of Eolhenomys (the corresponding 



lower molars are shown in Fig. 866). 



1. E. melanogaster conflnii Hinton. (Type.) 



2. E. fidelis Hinton. (Type.) 



3. E. melanogaster columns Thomas. (B.M., No. 98.11.1.27.) 



4. E. olitor Thomas. (B.M., No. 11.9.8.123.) 



5. E. proditor Hinton. (Type.) 



of the palatal shelf far forwards and under cover of the shelf. 

 Pterygoid fossae moderately large and deep, their floors very 

 slightly dorsal to the ventral surface of the basisphenoid. Audi- 

 tory bullae simple, without internal spongy tissue; stapedial 

 artery not enclosed in a bony tube. 



Mandible normal ; m^ displaced lingually by the shaft of the 

 incisor. 



Dentition. Incisors normal. Cheek-teeth rootless and rather 



