LIST OF PLATES 



PLATE 



I. Palates op Microtus. 

 II. Ondatra zibethica Linn^us. New-born skull. 



III. Arvicola ampeibivs Linn^us. Skull and limb- 



skeleton OF an old individual. 



IV. Arvicola terrestris Linn^us. Skull and limb- 



skeleton OF AN OLD individual. 



V. DiCROSTONYX OULIELMI SanFORD. Co-TYPES. 



VI. Skulls of Lemmus. 

 VII-XII. Skulls of Evotomys. 



XIII. MiMOMYS. Lateral views of mj. 



XIV. MiMOMYS INTERMEDIUS NewTON. PaLATE AND 



mandible. 



XV. MiMOMYS MAJORI HiNTON. OuTER VIEWS OF »?i. 



