Carriker : List of the Birds of Costa Rica. 479 



Bangs Collection : Volcan de Irazu (?) (Underwood). 



C. H. Lankester Collection : Volcan de Turrialba (W. Schaus). 



Univ. of Nebraska : Volcan de Irazu (L. Bruner). 



A very distinct form and easily recognized by its dark color and 

 mottled back. It is found only in the high mountains, from 5,000 

 feet upwards. It is a very rare bird in Costa Rica and not often col- 

 lected, living, as it does, in the dense forests of the mountains, where 

 its small size and sedentary habits render it easily overlooked. 



181. Glaux ridgwayi (Alfaro). 



Cryptoglaux ridgwayi Alfaro, Proc. Biol. Soc. Wash., XVIII, 217 (La Can- 

 delaria Mts. , near Escazu, <J juv. [Alfaro]). 



It is a most unusual thing to find a race of the Acadian Owl so far 



south as Costa Rica. The type is an immature bird, but the phase of 



plumage which it represents is very different from the corresponding 



phase in G. acadicus, so that there can be no doubt of the validity or 



the species. 



Family ALUCONID^;. 



182. Aluco pratincola guatemalae (Ridgway). 



Sh ix jlammea var. guatemala? RlDGWAY, Baird, Brewer, and Ridgway, N. Amer. 



Birds, III, II (Panama to Guatemala). 

 Strix perlata Lawrence, Ann. Lye. N. Y., IX, 1868, 132 (San Jose [Frantzius]). 



Frantzius, Jour, fiir Orn., 1869, 3^7 (C. R.). — Salvin and Godman, Biol. 



Centr.-Am., Aves, III, 1897, 2 (references cited). 

 Strix flammea Sharpe, Cat. Birds Brit. Mus., II, 1875, 291, part. 

 Strix flammea guatemala Zeledon, An. Mus. Nac. de C. R., I, 1887, 125 (San 



Jose). — Cherrie, Auk, IX, 1892, 327 (San Jose, tolerably common). 

 Aluco pratincola guatemala-, Fourteenth Supp. A. O. U. Check- List, 370, Auk, 



XXV, 1908 (critical, on family and generic name). 



Bangs Collection : San Jose (Underwood). 

 C. H. Lankester Collection : Ochomogo. 



Evidently found only over the central plateau, where it appears to 

 be fairly common in some places. 



Family PSITTACID^E. 



Key to the Costa Rican Species. 



/. Size very large, tail long and pointed (wing not less than 350; tail, 450). 



d. Colors chiefly red ; greater coverts and inner tertials mainly yellow ; rump, 



upper and lower tail-coverts light blue. Ara macao, $ , 9 • 



aa. Colors chiefly yellowish olive-green ; primaries blue above, greenish-yellow 



beneath. Ara ambjgua, $ , O • 



