BIEDS OF NORTH AND MIDDLE AMEEIOA. 273 



Sound, Alaska).— Bean, Proc. U. S. Nat. Mus., v, 1882, 159 (Sitka, Georges 

 I., and Port Althorp, Alaska).— Codes, Check List, 2d ed., 1882, 342.— 

 American Ornithologists' Union, Check List, 1886, no. 489.— Nelson, Nat. 

 Hist. Coll. Alaska, 1887, 168 (Sitka; Georges I.).— Belding, Land Birds 

 Pacific Distr., 1890, 115 (British Columbia; notes).— Chapman, Bull. Am. 

 Mus. N. H., iii, 1890, 142 (Ashcroft, Westminster, Mount Lehman, and Van- 

 couver I., British Columbia; Cape Disappointment and Kalama, Washing- 

 ton; crit.; measurements).— Fannin, Check List Birds Brit. Col., 1891, 33 

 (coast) .—Lawrence (K. H.), Auk, ix, 1892, 45 (Grays Harbor, Washing- 

 ton). —Rhoads, Auk, X, 1893, 18-21 (crit.; measurements); Proc. Ac. Nat. 

 Sci. Phila., 1893, 46, part (coast British Columbia, crit.).— Bendiee, Life 

 Hist. N. Am. Birds, ii, 1895, 414, pL 4, fig. 15 (egg).— Ghinnell (J.), Auk, 

 XV, 1898, 128 (Sitka).— (?) Kobbe, Auk, xvii, 1900, 354 (Cape Disappoint- 

 ment, Washington; abundant resid.; habits; food).— Bowles, Condor, ii, 

 1900, 84 (near Tacoma, Washington; habits; desor. nest and eggs).— Grin- 

 NELL, Condor, iii, 1901, 23 (Prince William Sound, Alaska).— Eatheun 

 (S. F.), Auk, xix, 1902, 136 (Seattle, Washington; common resid.). —Bailey 

 (Florence M.), Handb. Birds W. TJ. S., 1902, 282. 



[Corvus'] caurinus Gray, Hand-list, ii, 1870, 13, no. 6214. 



Clorvus] caurinus Coubs, Key N. Am. Birds, 2d ed., 1884, 417.— Ridgway, Man. 

 N. Am. Birds, 1887, 363. 



ICorvus americanus.] Var. caurinus Coues, Key, 1872, 163. — Henshaw, Orn. 

 Rep. Wheeler's Surv., 1879, 305 (crit). 



Corvus americanus . . var. caurinus Coues, Check List, 1873, no. 2286. 



[Oorvus americanus.'] b. ? caurinus Codes, Birds N. W., 1874, 206, part (syn- 

 onymy). 



Corone caurina Sharpe, Cat. Birds Brit. Mus., iii, 1877, 36 (Vancouver I.). 



Corvus americanus caurinus Rhoads, Auk, x, Jan., 1893, 31, part (includes C. a. 

 hesperis); Proc. Ac. Nat. Sci. Phil., 1893, 63, part (do.). 



Corvus frugivorus caurinus Ridgway, Proc. U. S. Nat. Mus., iii, Aug. 24, 1880, 

 184; Nom. N. Am. Birds, 1881, no. 2326. 



CORVUS OSSIFRAGUS Wilson. 

 FISH CROW. 



Similar to C. amnericamts, but smaller thaa the smallest race of the 

 latter {C. a. caurinus), with relatively smaller bill; plumage much 

 more glossy black, the gloss more bluish above, more greetiish beneath. 



Adults {sexes alike). — Entire plumage glossy black, the upper parts 

 glossed with bluish violet (more purplish violet on lesser wing-coverts 

 and secondaries), the under parts glossed with bluish green or green- 

 ish blue; bill, legs, and feet black; iris brown. 



Adult male.— Ijength (skins), 3T9-394 (382.5); wing, 264.6-300 (278); 

 tail, 148-176.5 (158.5); exposed culmen, 40.5-45 (43); depth of bill at 

 nostrils, 14.6-15.5 (16); tarsus, 45.5-50 (48); middle toe, 33.5-40 

 (35. 5). « 



Adult female.— Length (skins), 356-406.5 (373); wing, 264.6-282.5 

 (271.6); tail, 137.5-166 (162); exposed culmen, 39-42 (40.5); depth of 



"Nine specimens. 

 . 10384— VOL 3—03 18 



