The viviparous quadrupeds of North America

Sciurus rubricaudatus, Red-tailed Squirrel. Natural size. Male.

Sciurus Sayi, Say&#8217;s Squirrel. (Natural size.)

Sciurus sub-auratus, Orange-bellied Squirrel. Male &#038; female. Natural size.

Servus alces, Moose Deer. Old male &#038; young.

Sorex Carolinensis, Carolina Shrew. Males &#038; female. Natural size.

Sorex palustris, American Marsh Shrew. Males. Natural size.

Sorex parvus, Say&#8217;s Least Shrew. Natural size.

Spermophilus annulatus, Annulated Marmot Squirrel. (Natural size.)

Spermophilus Douglassii, Douglasse&#8217;s Spermophile. Natural size.

Spermophilus Franklinii, Franklin&#8217;s Marmot Squirrel. (Male &#038; female. Natural size.)

Spermophilus lateralis, Say&#8217;s Marmot Squirrel. Natural size.

Spermophilus ludovicianus, Prairie Dog-Prairie Marmot Squirrel. Natural Size. 1. Male, 2. Female, 3. Young.

Spermophilus macrourus, Large-tailed Spermophile. Male. Natural size.

Spermophilus Mexicanus, Mexican Marmot Squirrel. Male. Natural size.

Spermophilus Parryi, Parry&#8217;s Marmot Squirrel. Natural size.

Spermophilus Richardsonii, Richardson&#8217;s Spermophile. Natural size.

Spermophilus spilosoma, California Marmot Squirrel. Natural size.

Spermophilus tridecemlineatus, Leopard Spermophile. Natural size. Male and female.

Tamias Lysterii, Chipping Squirrel, Hackee, &#038;c. Natural size. Male, female and young, first Autumn.

Tamias quadrivitatus, Four-striped Ground Squirrel. Natural size. 1. Male, 2. Female, 3 &#038; 4. Young.

Tamias Townsendii, Townsend&#8217;s Ground Squirrel. Natural size.

Tarandus furcifer, Caribou, or American Rein Deer. Males. 1. Summer pelage, 2. Winter pelage.

Ursus Americanus, American Black Bear. Male &#038; female.

Ursus Americanus, var. Cinnamonum, Cinnamon Bear. Male &#038; female.

Ursus ferox, Grizzly Bear. Males.

Ursus maritimus, Polar Bear. (Male.)

Vulpes fulvus, American Black, or Silver Fox.

Vulpes Fulvus, American Red-Fox. (Male.)

Vulpes lagopus, Arctic Fox. Winter &#038; Summer pelage.

Vulpes velox, Swift Fox. Natural size. Male.