BIRDS OF NORTH AND MIDDLE AMERICA. 191 



6. Width of maxilla at base 8.9 mm. or more, depth of bill at base about 14 



mm. , wing not more than 76.2 mm Psittacula crassirostris, adult female 



(extralimital). 

 66. Width of maxilla at base less than 8. 9 mm., depth of bill at base less than 14 mm., 

 or else wing decidedly more than 76.2 mm. 

 c. Upper parts (except forehead and rump) dull grayish green. 



Psittacula coelestis, adult female (extralimital). 

 cc. Upper parts bright green, more vivid on rump (forehead sometimes yellow). 

 d. Forehead green, like cheeks. 

 e. Anterior portion of head (cheeks as well as forehead) decidedly more yel- 

 lowish green than occiput and hindneck. {Psittacula passerina, adult 

 female.) 

 /. Lighter colored, with under parts more yellowish green. 



Psittacula vivida flavescens, adult female (extralimital). 

 ff. Darker, with under parts purer green. 



Psittacula vivida vivida, adult female (extralimital). 

 ee. Anterior portion of head not distinctly more yellowish green than occiput 

 and hindneck (though sometimes distinctly lighter green). 

 /. Under wing-coverts light bluish green ; inner webs of secondaries with- 

 out distinct yellow edgings; feet light colored. 



Psittacula conspicillata, adult female (extralimital). 

 ff. Under wing-coverts apple green or light parrot green ; inner webs of sec- 

 ondaries edged with yellow ; feet horn color or dusky. 

 g. Above light parrot green, below apple green; culmen (chord), 11.6- 

 12.2 mm., width of maxilla at base 8.9-9.6 mm. {Psittacula cyano- 

 pygia, adult female.) 

 h. General green color deeper and purer. 



Psittacula cyanopygia cyanopygia, adult female (p. 192). 

 hh. General green color paler and more yellowish. 



Psittacula cyanopygia pallida, adult female (p. 193). 

 gg. AboA^e deeper parrot green, below apple green or light parrot green; 

 culmen (chord), 13.4-14 mm., width of maxilla at base 10.1 mm. 



Psittacula insularis, adult female (p. 194). 

 dd. Forehead yellow or greenish yellow, the cheeks light yellowish green. 

 e. Greater wing-coverts veiy indistinctly edged with lighter green; yellow 

 of forehead more restricted; green of under parts less yellowish. {Psit- 

 tacula passerina, adult female.) 

 /. Yellow of forehead more restricted. 



Psittacula passerina passerina, adult female (extralimital). 

 ff. Yellow of forehead more extended. 



Psittacula passerina deliciosa, adult female (extralimital). o 

 ee. Greater wing-coverts distinctly edged with light yellowish green (apple 

 green); yellow of forehead more extended, covering lores and tinging 

 crown; under parts more yellowish green. 



Psittacula spengeli, adult female (p. 195). 



PSITTACULA CYANOPYGIA CYANOPYGIA Souancg. 



MEXICAN PARROTLET. 



Adult male. — Above light parrot green becoming lighter and more 

 yellowish (apple green) on forehead; greater wing-coverts, whole 

 rump (including lower back), under wing-coverts, and axillars, very- 

 bright turquoise blue, the secondaries (except proximal ones or 



o The adult female of P. passerina cyanochlora not seen by me. 



