The viviparous quadrupeds of North America

1. Arvicola Townsendii, Townsend&#8217;s Arvicola; 2. Arvicola nasuta, Sharp-nosed Arvicola. Natural size. 3. Mus riparius, Bank Rat. Natural size.

1. Pseudostoma Floridana, Southern Pouched Rat 2. Sorex Dekayi, Dekay&#8217;s Shrew

1. Pteromys sabrinus, Severn River Flying Squirrel; 2. Pteromys alpinus, Rocky Mountain Squirrel.

1. Sciurus Fremonsii, Fremont&#8217;s Squirrel. Natural size; 2. Sciurus fuliginosus, Sooty Squirrel. Natural size.

1. Spermophilus Townsendii, American Souslik. Male 2. Arvicola Oregoni, Oregon Meadow-Mouse. Male 3. Arvicola Texiana, Texan Meadow Mouse. Male

Antilope Americana, Prong-horned Antelope. (Male &#038; female.)

Aplodontia leporina, The Sewellel. Male. Natural size.

Arctomys flaviventer, Yellow-bellied Marmot. Male. Natural size.

Arctomys Lewisii, Lewi&#8217;s Marmot. Natural size.

Arctomys monax, Maryland Marmot, Woodchuck, Groundhog. Natural size. Old &#038; young.

Arctomys pruinosus, Hoary Marmot &#8212; The Whistler.

Arvicola borealis, Northern Meadow-Mouse. Natural size.

Arvicola hispidus, Cotton Rat. Natural size.

Arvicola Pennsylvanicus, Wilson&#8217;s Meadow Mouse. Natural size.

Arvicola richardsonii, Richardson&#8217;s Meadow Mouse. Natural size.

Arvicola xanthognathus, Yellow cheeked Meadow Mouse. Natural size.

Arvocola pinetorum, Lecontes Pine Mouse. (Male &#038; Famale. Natural size.)

Bassaris astuta, Ring-tailed Bassaris. Natural size. Male.

Bos Americanus, American Bison, or Buffalo. Male.

Bos Americanus, American Bison. 1. Female, 2. Young, 3. Male.

Canis (Vulpes) Fulvus, American Cross-Fox

Canis (Vulpes) Virginianus, Grey Fox

Canis familiaris, Esquimaux Dog.

Canis familiaris, Hare-Indian Dog. Male.

Canis latrans, Prairie Wolf. Males.

Canis lupus, Black American Wolf. Male.

Canis lupus, Red Texan Wolf. (Male.)

Canis lupus, White American Wolf. Male.

Capra Americana, Rocky Mountain Goat. Male &#038; female.

Castor fiber Americanus, American Beaver