270 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



C'lovvus'] americanua floridanus Ridgway, Man. N. Am. Birds, 1887, 362. 



Corone floridana Shaepe, Cat. Birds Brit. Mus., iii, 1877, 35, footnote. 



Corvus americanus (not of Audubon) Allen, Bull. Mus. Comp. Zool., ii, 1871, 



297, part, excl. syn. part (e. Florida). — Maynaed, Birds E. N. Am., 1881, 



155, part (Florida). 

 C[orvus] a[mericanus] pascuus OouES, Auk, xvi, Jan., 1879, 84, in text (in lieu 



of Corvus floridanus, preoccupied). 

 Corvus americanus pascuus American Ornithologists' Union Committee, Auk, 



xvi, 1899, 112. 



CORVUS AMERICANUS HESPERIS Ridgway. 

 WESTEKN CROW, 



Similar to C. a. americanus, but decidedly smaller, with bill rela- 

 tively smaller and more slender. 



Adult male.— Length (skins), 387.5-M4.5 (412.5); wing, 282-325 

 (302.5); tail, 159-190 (HI); exposed culmen, 45.6-50.5 (47.5); depth 

 of bill at nostrils, 15-17.5 (16.5); tarsus, 54.5-58.5 (57.5); middle toe, 

 33-38 (35.5)." 



Adult female.— Length (skins), 394-426 (408.5); wing, 278-300 (295); 

 tail, 160.5-183 (169.5); exposed culmen, 43^8 (45.5); depth of biU at 

 nostrils, 15-16.5 (16); tarsus, 53-59 (55.5); middle toe, 30.5-37.5 (34).* 



Western North America, from Rocky Mountains (from eastern 

 portion of arid region?) to Pacific coast, except coast district from 

 Straits of Fuca and Puget Sound northward; north, in the interior, 

 to British Columbia (Fort St. James) ; south to southwestern Texas, 

 New Mexico, and southern Arizona, but not recorded as breeding at 

 extreme southern localities. 



Corvus ossifragus (not of Wilson) Gambel, Joum-. Ac. Nat. Sci. Phila., 2d ser., i, 

 1847, 47 (coast California); Proc. Ac. Nat. Sci. Phila., 1847, 203 (do.).— 

 WooDHOusE, Sitgreaves' Expl. Zuni and Col. R., 1853, 78, part (Texas?, New 

 Mexico; California). — Newberry, Rep. Pacific R. R. Surv., x, pt. iv, 1857, 

 83 (Willamette and Columbia rivers; coast Oregon and California).-=-(??) 

 Hatch, Birds Minnesota, 1892, 270. » 



Corvus americanus (not of Audubon) Maximilian, Reis. in Nord-Amerika, i, 

 1839, 140 (upper Missouri R.) — Gambel, Journ. Ac. Nat. Sci. Phila., 2d ser., 

 i, 1847,47, (California and "interior").— McCall, Proc. Ac. Nat. Sci. Phila., 

 1851, 214 (New Mexico, Texas, etc.). — Woddhodse, Sitgreaves' Expl. Zuiii 

 and Col. R., 1853, 78, part (New Mexico, etc. ).— Newberry, Rep. Pacific R. R. 

 Surv., X, pt. iv, 1857, 82 (California; Des Chutes R., Oregon). — Baihd, Rep. 

 Pacific R. R. Surv., ix, 1858, 566, part (Tulare Valley and Presidio, Califor- 

 nia; Fort Vancouver, Washington); Cat. N. Am. Birds, 1859, no. 426, part.— 

 Henry, Proc. Ac. Nat. Sci. Phila., 1859, 108 (New Mexico).— Heehmann, 

 Rep. Pacific R. R. Surv., x, pt. vi, 1859, 54 (California).— Cooper and Suck- 

 ley, Rep. Pacific R. R. Surv., xii, pt. ii, 1860, 211 (Washington, chiefly e. of 



"• Thirteen specimens. 

 ^ Ten specimens. 



«A flock of "not less than a hundred and flfty" said to .have been seen near 

 Minneapolis, Sept. 21, 1869. ' 



