BIKDS OF NORTH AND MIDDLE AMEBIC A. 283 



ft.; notes).— Goss, Bull. Nutt. Orn. Club, viii, 1883, 44-45 (Sangre de Oristo 

 Mts., Colorado; breeding habits); Auk, vi, 1889, 123 (Marshall Co., w. Kan- 

 sas, 1 spec, Aug. 13; Fort Kearney, Nebraska); Hist. Birds, Kansas, 1891, 

 386 (Marshall Co.).— Batchblder, Auk, i, 1884, 17 (descr. young.)— 

 Agebsbobg, Auk, ii, 1885, 282 (s. e. Dakota, 2 specs., Oct., 1883).— American 

 Ornithologists' Union, Check List, 1886, no. 491.— Townsend, Proc. U. S. 

 Nat. Mus., X, 1887, 212 (Mount Shasta, etc., n. California; habits).— Nelson, 

 Nat. Hist. Coll. Alaska, 1887, 168 (Sitka).— Cooke, Bird Migr. Miss. Val., 

 1883, 159 (Vermilion Co., Dakota, 1 spec, Oct.; Nebraska).— Mearns, Auk, 

 vii, 1890, 257 (San Francisco Mts., Arizona, breeding in pine and spruce 

 belts; Mogollon Mts., Oct.; habits).— Merriam, N. Am. Fauna, no. 3, 1890, 

 94 (San Francisco Mts., Arizona).— Anthony, Zoe, iv, 1893, 239 (San Pedro 

 Martir Mts., Lower California).— Kellogg, Auk, xi, 1894, 260 (Finney Co., 

 W.Kansas, 3 specs., Oct. 10) .—Mitchell, Auk, xi, 1894, 327 (Crittenden 

 Co., Arkansas, Apr. 1, 1891).— Bryant (J. A.), Auk, xii, 1895, 82 (near 

 Kansas City, Missouri, 1 spec, Oct. 28, 1894). 



Plieicorms'] columbiantis Coves, Key N. Am. Birds, 2d ed., 1884, 418.— Ridgway, 

 Man. N. Am. Birds, 1887, 364. 



Corvus megonyx Waglbk, Syst. Av., 1827, Corvus, sp. 20. 



Genus CYANOCEPHALUS Bonaparte. 



Gymnorhinus (not Oymnorhina Gray, 1840) Maximilian, Eeise Nord. Amer., ii, 

 1841, 21. (Type, G. CJ/a)iocep?(aZiis Maximilian. ) 



Oi/anocfp/iatas Bonaparte, Oss. Stat. Zool. Eur. Vert., 1842, 17. (Type, Gymno- 

 rhinus cyanocep/iaZMS Maximilian. ) (See Salvin, Ibis, 1873, 103.) 



Gymnokitta Bonaparte, Consp. Av., i, 1850, 382. (Type, Gymnorhinus cyano- 

 cephalus Maximilian. ) 



Gymnocitta (emendation) Coues, Bull. Nutt. Orn. Club, v, 1880, 98. 



Small Corvinse (wing less than 160 mm.) with wholly exposed and 

 slightly operculate nostrils, flattened mesorhinium, and uniform bluish 

 gray or grayish blue plumage. 



Bill about as long as head, elongate subcuneate, nearly as broad as 

 deep, with nearly straight outlines, its depth at base less than one- 

 third the length of exposed culmen, its basal width about the same; 

 culmen straight to near tip, which is slightly decurved, the tip 

 rather broad, the mesorhinium broad and flattened; gonys slightly 

 convex; commissure straight to near base, where slightly deflected to 

 the rictus. Nostril wholly exposed, longitudinal, more or less oval, 

 but nearly straight on upper edge, where a slightly developed opercu- 

 lum is more Or less evident. Rictal bristles distinct but small. Wing 

 long, its tip well produced (longer than exposed culmen) and rounded; 

 tenth primary shorter than secondaries, but more than half as long as 

 longest primary; eighth and seventh primaries longest, the sixth a 

 little shorter; inner webs of four or five outer primaries slightly sinu- 

 ated. Tail more than two-thirds as long as wing, even or very slightly 

 rounded. Tarsus about equal to exposed calmen or slightly longer; 

 middle toe, with claw, decidedly shorter than tarsus; outer toe, with 

 claw, reaching to or very slightly beyond base of middle claw, the 



