FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 313 



Genus CANIS Linnaeus. 



Canis Linnaeus, Syst. Nat., X ed., I, 1758, p. 38. Type Cam's 



familiaris Linnaeus. 



Temporal crests joining and extending in a single parietal ridge or 

 sagittal crest;* frontal sinus present; upper incisors lobed or notched; 

 nasals extending to or back of maxillaries ; jaws elongated ; nose elongated 

 and tapering; postorbital process of frontal bone rounded, with end 

 curving downward; pupil of eye round. 



Dental formula: I. ^, C. , Pm. 4d, M. =42. 

 3-3 I-l 4-4 3-3 



Canis nubilus SAY. 

 GRAY WOLF. TIMBER WOLF. 



Canis nubilus SAY, Long's Exped. Rocky Mts., I, 1823, p. 169. 



Canis occidentalis KENNICOTT, Trans. 111. State Agr. Soc., I, 1853-54 (^SS). p. 578 

 (Cook Co., Illinois). THOMAS, Trans. 111. State Agr. Soc., IV, 1859-60 (1861), 

 p. 654 (Illinois). BANGS, Amer. Nat., XXXII, 1898, p. 505. ADAMS, Rept. 

 State Board Geol. Surv. Mich., 1905 (1906), p. 130 (Michigan). HAHN, Ann. 

 Rept. Dept. Geol. & Nat. Resources Ind., 1908 (1909), p. 557 (Indiana). SETON, 

 Life Histories of Northern Animals, II, 1909, p. 749. WOOD. Bull. 111. State 

 Lab. Nat. Hist., VIII, 1910, p. 570 (Illinois). 



Lupus occidentalis LAPHAM, Trans. Wis. State Agr. Soc., II, 1852 (1853), p. 339 

 (Wisconsin). 



Canis occidentalis var. griseo-albus MILES, Rept. Geol. Surv. Mich., I, 1860 (1861), 

 p. 220 (Michigan). 



Canis lupus STRONG, Geol. Wis., Surv. 1873-79, I, 1883, p. 436 (Wisconsin). EVER- 

 MANN & BUTLER, Proc. Ind. Acad. Sci., 1893 (1894), p. 135 (Indiana). 



Canis lupus nubilus RHOADS, Proc. Acad. Nat. Sci. Phila., 1896 (1897), p. 200 (Ten- 

 nessee). 



Canis nubilis McATEE, Proc. Biol. Soc. Wash., XX, 1907, p. 6 (Indiana). 



Canis griseus JACKSON, Bull. Wis. Nat. Hist. Soc., VI, 1908, p. 27 (Wisconsin). 



Type locality Vicinity of Council Bluffs, Iowa. 



Distribution Not definitely determined. 



Description Adult: Size large; general color variable; the majority 

 of specimens grayish or brownish gray or brownish white, with 

 the middle portion of back to base of tail largely black; much pale 

 rufous brown on legs and about the head and ears; terminal portion 

 of tail tinged with pale rufous, the hairs at the tip mixed black and 

 white; diameter of upper canine teeth at base (in adult) .50 inch or 

 more; nose pad (in adult) more than 1.25 inch wide. 



Measurements Total length, about 56.50 to 63 in. (1400 to 1600 mm.) ; 

 tail vertebrae, 15 to 16 in. (380 to 416 mm.); hind foot, about 10 in. 

 (254 mm.). (Specimens from Michigan.) 

 * For illustration see p. 298. 



