304 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



mala).— Baikd, Brewer, and Ridgway, Hist. N. Am. Birds, i, 1874, 580, 



footnote. — Salvin and Goodman, Biol. Centr.-Am., Aves, i, 1886, 374, pi. 



26, fig. 1 (Volcan de Fuego, 10,000-12,000 ft.; Volcan de Agua, 10,000-12,000 



ft.; Altos, Quezaltenango, and Totonicapan).— Sharpe, Oat. Birds Brit. 



Mus., xii, 1888, 656. 

 J. [unco] alticola Ridgway, Man. N. Am. Birds, 1887, 424. 

 \_Junco] alticola Gray, Hand-list, ii, 1870, 93, no. 7373.— Sclatbr and Salvin, 



Nom. Av. Neotr., 1873, 32. 

 \Junco hyemalis] var. alticola Ridgway, Am. Nat, vii, Oct., 1873, 613. 

 [Junco cinereus] var. alticola Baied, Brewer, and Ridgway, Hist. N. Am. Birds, 



i, 1874, 580. 

 \_Junco canicejiti] var. alticola Henshaw, Rep. Orn. Spec. Wheeler's Surv., 1873 



(1874), 113 (crit.). 



JUNCO VULCANI (Boucard). 

 IRAZ-S JUNCO. 



Adult {sexes alike). — Pileum and hindneck grayish olive, sometimes 

 obsoletely streaked with darker; lores dull black oi slate-black; rest 

 of head and neck plain mouse gray, tinged with olive on auricular 

 region, paling into smoke gray on malar region, chin, and throat, the 

 same color continued backward over chest, breast, and sides, the 

 flanks more olivaceous and abdomen paler, somewhat tinged with pale 

 buffy; under tail-coverts buffy olive, broadly margined with pale buffy 

 or whitish; back, scapulars, rump, and upper tail-coverts olive, the 

 back and scapulars broadly streaked with black; wings and tail dusky, 

 with olive edgings, these rather browner on greater wing-coverts and 

 tertials; lateral rectrices without any definite white area, but with an 

 irregular paler blotch on terminal portion of inner web, and both webs 

 often (always in fresh plumage?) terminated by a small whitish spot; 

 maxilla brown, mandible paler (pinkish in life?); iris yellow; legs and 

 feet pale brownish (pink or flesh colored in life ?) ; length (skins) 161 . 29- 

 166.62 (164.08); wing, 74.68-80.26 (7Y.22); tail, 69.09-73.15 (71.12); 

 exposed culmen, 13.21-13.72 (13.46); depth of bill at base, 7.62-8.38 

 (8.13); tarsus, 25.91-27.69 (27.18); middle toe, 17.27-18.29 (17.78).' 



Volcano of Irazu, Costa Rica, above timber line (10,000 feet). 



Zonotrichia vulcani Boucard, Proc. Zool. Soo. Lend., 1878, 57, pi. 4 (Volcan de 

 Irazu, Costa Rica, alt. 10,000 ft.; coll. A. Boucard). — Salvin and Godman, 

 Biol. Oentr.-Am., Aves, i, 1886, 371, pi. 26, fig. 2.— Sharps, Cat. Birds Brit. 

 Mua.,xii, 1888, 602. 



Junco vulcani Ridgway, Proc. U. S. Nat. Mus., i, Dec. 10, 1878, 255 (summit of 

 Irazii; crit.) . — Zbledon, Oat. Aves de Costa Rica, 1882, 9; An. Mus. Nac. 

 Costa Rica, i, 1887, 111 (Volcan de Irazii). — Nutting, Proc. U. S. Nat. Mus., 

 V, 1883, 495 (summit of Irazii; habits, etc.). 



' Three specimens — one male, one female, the other with sex undertermined. 



