408 Fietp Museum or NaturaL History — ZoéLocy, Vor. XI. 
Blarina brevicauda carolinensis. Blarina parva. 
Sorex fumeus. Sorex richardsonii. 
Microsorex hoyi. Neosorex palustris. 
Upper Jaws and Teeth of Shrews, greatly enlarged. (After Merriam.) 
There is a surprising difference in the shape and size of both the skulls and the teeth in old and 
young Shrews of the same species, and, when comparing skulls for the purpose of identification, the 
student should select specimens of about the same age. 
