150 Frerp Museum or Natura History — Zoéxocy, Vo. XI. 
Cynomys ludovicianus (Orp), PrairrE Doc. Thomas includes 
this species in his list of Illinois Mammals (J. ¢., p. 657.) but it is 
probably an error, as the eastern limits of the range of this species is 
much farther west, it being rarely found east of the Missouri River.* 
Genus MARMOTA Blum. 
Marmota Blumenbach, Handb. der Naturg., I, 1779, p. 79. 
Size large, weight 8 to 10 pounds, but more often less; general color 
grizzly brown or grayish brown, without stripes; skull broad and de- 
pressed; post-orbital processes long and pointed; first premolar nearly 
as large as second; infraorbital foramen confined to lower part of 
maxillary; edges of auditory meatus somewhat protruding; tail com- 
paratively short (5 to 6 inches) and thickly haired; front feet with four 
developed toes and a rudimentary thumb; hind feet with five toes. 
Six species and two subspecies are recognized in North America, but 
only one species and one subspecies occur within our limits. 
Dental formula: I. =e 
KEY TO OUR SPECIES. 
A. Larger, with less rusty brown on under parts. Occurs in Illinois and Wisconsin. 
Woopcuuck. Marmota monax, p. 150. 
B. Smaller, with more rusty brown on under parts. Occurs in extreme northern 
Wisconsin. Canapa WoopcHuck. Marmota monax canadensis, p. 157. 
Marmota monax (LInw.). 
Woopcuuck. Grounp Hos. 
[Mus] monax Linnaus, Syst. Nat., X ed., I, 1758, p. 60. 
Arctomys monax LAPHAM, Trans. Wis. State Agr. Soc., II, 1852 (1853), p. 339 
(Wisconsin). KEnnicott, Trans. Ill. State Agr. Soc., I, 1853-54 (1855), P. 
579 (Cook Co., Illinois). Jb., Agr. Rept. for 1856, U. S. Patent Office Rept., 
1857, p. 82 (Illinois). Mites, Rept. Geol. Surv. Mich., I, 1860 (1861), p. 221 
(Michigan). ALLEN, Proc. Bost. Soc. Nat. Hist., XIII, 1869 (1871), p. 190 
(Iowa). Osporn, Proc. Iowa Acad. Sci., I, 1887~89 (1890), p. 43 (Iowa). 
StroNG, Geol. Wis., Surv. 1873-79, I, 1883, P- 440 (Wisconsin). HERRICK, 
Geol. & Nat. Hist. Surv. Minn., Bull. No. 7, 1892, p. 168 (Minnesota). GARMAN, 
Bull. Essex Inst., XXVI, 1894, p. 6 (Kentucky). Ruoaps, Proc. Acad. Nat. 
Sci. Phila., 1896 (1897), p. 193 (Tennessee). MILLER, Proc. Bost. Soc. Nat. 
Hist., XXVIII, 1897, p. 26 (Milton, Ontario). EveRMANN & BUTLER, Proc. 
Ind. Acad. Sci., 1893 (1894), p. 128 (Indiana). SNypER, Bull. Wis. Nat. Hist. 
Soc., II, 1902, p. 120 (Wisconsin). 
_ * Pellett records it from Cass County, southwestern Iowa. (Proc. Iowa Acad. 
Sci., 1910, p. 214.) ¢ 
