306 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



66. Naso-frontel plumes slightly developed, scarcely, if at all, erect; pileum (except 

 forehead) and hindneck always bright blue. [Xanthoura luxuom and sub- 

 species.) 

 c. Under tail-coverts light green. 



d. Larger and brighter colored, with more white on forehead; back distinctly 

 green (rarely tinged with blue); wing of male averaging 119, tail 134, 

 exposed culmen 26, tarsus 38.5. (Eastern portion of Mexican plateau, 

 from Vera Cruz and Puebla to highlands of Nuevo Leon and Tamaulipas. ) 



Xanthoara Inxnosa luxnosa (p. 306) 



dd. Smaller and duller colored, with less white on forehead; back more bluish 



green, more or leas tinged with pale blue; wing of adult male averaging 



113, tail 126, exposed culmen 25, tarsus 37.5. (Lower Eio Grande 



Valley.) Xanthoura luxuosa glauoescens (p. 308) 



cc. Under tail-coverts yellow (sometimes tinged with green). 



d. Under parts of body mostly light yellowish green; wing of adult male 

 averaging 122, tail 141.5, exposed culmen 28, tarsus 39.5. (States of 

 Oaxaca, (ruerrero, Michoacaii, and Chiapas, southern Mexico; north- 

 western Guatemala. ) Xanthoura luxuosa vivida (p. 309) 



dd. Under parte of body wholly clear yellow or (in some Guatemalan exam- 

 ples) slightly tinged with green; wing of adult male averaging 114, tail 

 135, exposed culmen 26, tarsus 37. (Eastern and central Guatemala to 

 Yucatan and northern Honduras. ) 



Xanthoura luxuosa ^uatimaleusis (p. 310) 



aa. Spots on eyelids white; breast bicolored (a conspicuous yellow crescent between 



black of chest and green of breast). (State of Jalisco, southwestern Mexico). 



Xanthoura luxuosa speoiosa (p. 311) 



XANTHOURA LUXUOSA LUXUOSA (Lesson). 

 GREEN JAY. 



Adults (sexes alike). — Nasal tufts, broad malar patch (extending up 

 to and involving posterior half of lower eyelid), and small spot imme- 

 diatelj^ over posterior half of eye deep campanula blue; crown, occi- 

 put, and hindneck campanula blue (slightly paler than malar spot, 

 etc.), forehead white, or yellowish white; lores, chin, throat, chest, 

 auricular region, and a superciliary line connecting the latter with the 

 loral space deep black, the jugular portion with a strongly convex, 

 abruptly defined outline; back, scapulars, rump, upper tail-coverts, 

 and wings plain yellowish green (varying from clear parrot green to 

 nearly oil green), the wings, rump, and upper tail-coverts rather lighter 

 or brighter than back; four middle rectrices duller or darker green, 

 becoming more bluish green terminally; four lateral rectrices clear 

 yellow (between maize yellow and lemon yellow); under parts, poste- 

 rior to chest, including under tail-coverts, pale yellowish green, the 

 lower portion of the abdomen and anal region pale yellow, and feathers 

 of other portions pale yellow beneath the surface; under wing-coverts 

 pale yellow; bill black; legs and feet brownish. 



Adult male. — Length (skins), 254-299.5 (2T3.5); wing, 112.5-123 

 (118.5); tail, 129-145.5 (134); exposed culmen, 25-27.5 (26); depth of 



