Contents vii 
PAGE 
Family Procyonidae . . . . .218 
Key of the Genera of Procyonidae . .218 
Family Ursidae . . . . .222 
Family Canidae . . . . .233 
Key of the Genera of Canidae . . . 234 
Family FeHdae 251 
Key of the Genera of Felidae . . .251 
Order Insectivora . . . . . .258 
Key of the Families and Genera of Insect- 
ivora 258 
Family Talpidae . . . . .259 
Family Soricidae . . . . .260 
Order Chiroptera ...... 267 
Key of the Colorado Families and Genera 
OF Bats . . . . . . 270 
Family Vespertiliondae . . . .271 
Family Molossidas 284 
Glossary 287 
Index ........ 291 
