﻿PLATE X. 



[Enlarged about seven times.] 



Figs. 1-4. Sorex (Atophyrax) hendirii. Easton, Wash. 



1. Upper jaw (profile). 



2. Lower jaw (profile). 



3. Crowns of lower series of teeth. 



4. Crowns of upper series of teeth. 



5-7. Sorex CNeosorex) palustris. Elk River, Minn. 



5. Crowns of upi>er series of teeth. 



6. Upper jaw (profile). 



7. Lower jaw (profile). 



