BIRDS 6i* iSfORTH AND MID&Lfi AMERICA. 29*7 



(l)Picoidea americamisfwmipectus Gbinnbll (J.), Univ. Calif. Pub. Zool., v, no. 2, 

 Feb. 18, 1909, 217 (Hoonah, Chichagoff I., Alaska; coll. Mus. Vertebr. Zool. 

 Univ. Calif.). 



{'l)Pic(ndes americanus dorsalis (not Picoides dorsalis Baird?) Nelson, Rep. Nat. 

 Hist. Coll. Alaska, 1887, 160 (Ft. Kenai; Kodiak).— Merriam, North Am. 

 Fauna, no. 5, 1891, 97 (Salmon R. Mts., Idaho).— Fannin, Check List Birds 

 Brit. Col., 1891, 28 (mts. e. of Cascade Range, n. to Cassiar). — Kermodb, 

 Prov. Mxu. Victoria, 1909, 49 (e. of Cascade Range, Brit. Columbia). 



PICOIDES AMERICANUS DORSALIS (Baird). 



ALPIITE THREE-TOED WOODFECEEB. 



Similar to white-backed examples of P. a. fasciatus, but larger; 

 white markings on back usually all longitudinal (very rarely with 

 any transverse bars of black), white supra-auricular streak usually 

 broader, forehead usually with more black and less whitish spotting, 

 white spots or bars on inner web of innermost secondaries larger, 

 and sides and flanks usually less heavily barred with black. 



Adult male.— Length, (skins), 190-210 (201); wing, 120.5-128 

 (123.3); tail, 71-77.5 (75.2) ; cubnen, 26-30.5 (28.9) ; tarsus, 20-22.5 

 (20.9); outer anterior toe, 10-12 (10.8) .« 



Adtdt /emaZe.— Length (skins), 191-212 (198); wing, 118-129 

 (121.5); tail, 70-81.5 (76.1); cuhnen, 25-28 (26.5); tarsus, 19.5-21.5 

 (20.6); outer anterior toe, 10-11.5 (10.6)." 



Boreal forests of Rocky Mountain district, from northern Montana 

 (Paola; east side Bitterroot Mountains; GaUatin Basin; Belt Moun- 

 tains) and Wyoming (Lake Fork; Lower Geyser Basin; Laramie 

 Peak; Fort Bridger), southward through higher mountains of Colorado 

 to New Mexico (Pecos Baldy; Upper Pecos River; Zuni Mountains; 

 Jamez Mountains; Manzano Mountains; Santa Fe Mountains; Twin- 

 ing; Copperton; La Jara Lake; Cantonment Burgwyn; Rio Grande) 

 and Arizona (San Francisco Mountain; White Mountains; Bakers 

 Butte; Willow Springs; Kaibab Plateau). 



Picoides dorsalis Baied, Rep. Pacific R. R. Surv., ix, 1858, 100 (Laramie Peak, 

 Wyomiiig; coll. U. S. Nat. Mus.); ed. 1860 (Birds N. Am.), 100, atlas, pi. 85, 

 fig. 1; Cat. N. Am. Birds, 1859, no. 84.— Malherbe, Mon. Picid., i, 1861, 

 179.— Cassin, Proc. Ac. Nat. Sci. Phila., 1863, 203.— Ghat, List Birds Brit. 

 Mus., Picidse, 1868, 31.— Meebiam, Sixth An. Rep. U. S. Geol. Surv. Terr, 

 for 1872 (1873), 694 (Lower Geyser Basin, Wyoming).— Hargitt, Cat. Birds 

 Brit. Mus., xviii, 1890, 278 (Ft. Bridger, Wyoming; Santa Fe Mts. and Rio 

 Grande, New Mexico); Ibis, 1891, 467, in text (crit.). 



[Picoides] dorsalis Gray, Hand-list, ii, 1870, 181, no. 8538. — Sharpe, Hand-list, 

 ii, 1900, 217. 



T[ridaetylia] dorsalis Cabanis and Heine, Mus. Hein., iv, heft 2, 1863, 26. 



Picus dorsalis Sundevall, Consp. Av. Picin., 1866, 14. 



[Picoides americanus.] Var. dorsalis Baird, in Cooper's Om. Calif., 1870, 386, 387 

 (crit.).— CoTJES, Key N. Am. Birds, 1872, 194. 



" Ten specimens. 



