MUEIDJE— ARVICOLINiE— AltVICOLA XANTHOGNATHUS. 



201 



of other species. The soles run from 0.85 to 1.05 — say from O.fcO to 1.00 — 

 as an ordinary range; and it should be observed that the smallest specimens, 

 as Nos. 4509, 4510, G558, &c., have feet quite up to average dimensions. 



Our table is drawn up to show the different localities represented in our 

 immense series of specimens ; but otherwise the skins were picked out at 

 random from the box containing several hundred till we had tabulated enough 

 to answer our purpose. 



Tablk L. — Measurements of sixt>/-niiie specimens of Akvicoi.a xanihognathus from North America north 



of the United States. 



'Skin 8.00; much stretched. 



