a1. Cheeks blue. b1. Cheeks and collar pale blue. ... lunulatus, [male] (p. 285) b2. Cheeks and collar bright blue. ... intermedius, [male] (p. 285) a2. Cheeks green. b1. Collar deep blue. ... mindanensis, [male] (p. 286) b2. Collar yellow, with crescent-like black bands. ... lunulatus, [female] (p. 285); mindanensis, [female] (p. 286) b3. Collar faint orange-yellow. ... intermedius, [female] (p. 285) 246. BOLBOPSITTACUS LUNULATUS (Scopoli). LUZON GUAIABERO. Psittacus lunulatus Scopoli, Del. Flor. et Faun. Insubr. (1786), 86. Bolbopsittacus lunulatus Salvadori, Cat. Birds Brit. Mus. (1891), 20, 504; Sharpe, Hand-List (1900), 2, 34; McGregor and Worcester, Hand-List (1906), 49. Bo-bó-toc, gua-ya-bé-ro, Luzon. Luzon (Cuming, Möllendorff, Steere, Meyer, Everett, Steere Exp., Whitehead, McGregor). Male.--General color green, lighter below; lores, orbit, cheeks, a narrow line on forehead, and a narrow collar on hind neck pale blue; lower back, rump, and upper tail-coverts light greenish yellow; the longest coverts clear green; primaries, primary-coverts, and alula blue on outer webs, inner webs black; ends of primaries more or less green; on under side of wing a pale yellowish band across inner webs of secondaries and shorter primaries; rectrices green above, blue below. Iris brown, cere black; bill black, with base white; legs dull green; nails horn-brown. In the female all of the lower mandible is dirty white. Three males and three females from Bataan Province average, wing, 98; tail, 36; culmen from cere, 18; tarsus, 13. Female.--Differs from the male in having the lower parts lighter green; blue of head confined to feathers of lower cheeks overhanging chin on each side; a narrow ring of light green around eye; collar on hind neck yellow, each feather with two narrow crescentic lines of blackish green; lower back and rump green, with blackish crescentic marks. Same size as the male. Young.--"Young male resembles the female." (Salvadori.) 247. BOLBOPSITTACUS INTERMEDIUS Salvadori. INTERMEDIATE GUAIABERO. Bolbopsittacus intermedius Salvadori, Cat. Birds Brit. Mus. (1891), 20, 505; Sharpe, Hand-List (1900), 2, 34; McGregor and Worcester, Hand-List (1906), 49. Leyte (Whitehead); Samar (Bourns & Worcester, Whitehead). Male.--"Similar to the male of B. lunulatus, from which it differs in having the face of a deeper blue with a purple tinge, and a blue collar on the lower part of the hind neck brighter and like that of B. mindanensis; the under parts are of a deeper and brighter green than either in B. lunulatus or in B. mindanensis; bill black; feet greenish. Length, 147; wing, 99; tail, 33; bill, 19; tarsus, 10." (Salvadori.)