TABLE OF CONTENTS. 
Sorex Forsteri, 
Sorex Cooperi, 
Sorex Fimbripes, 
Sorex Personatus, . 
Georychus Groenlandicus, 
Dipodomys Ordii, . 
Arvicola (Hesperomys) Texana, 
Scalops iEneus, 
Seal ops Latimanus, 
Mus Le Contei, 
Mus Michiganensis, 
Perognathus (Cricetodipus) Parvus 
Didelphis Breyiceps, 
Didelphis Californica, 
Mus Carolinensis, . 
Sorex Richardsonii, 
Sorex Brevicaudus, 
Pseudostoma Bulbivorum, 
Dipodomys Agilis, . 
Dipodomys Heermanni, . 
Perognathus Fasciatus, . 
Sciurus Clarkii, 
Sciurus Annul atus, 
Forster’s Shrew Mouse, 
Cooper's Shrew, 
Fringe-footed Shrew, . 
Greenland Lemming, 
Ord's Fonched Mouse, 
Black-clawed Shreio Mole, 
Texan Shrew Mole, 
Le Conte's Mouse, 
Michigan Mouse, 
Carolina Mouse, 
Richardson' s Shrew , . 
Short-tailed Shrew, 
Clark's Squirru 
Lewis's Squirrel 
