256 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



283(259); wing, 171-190 (178.2); tail, 83-98 (89.6) ; culmen, 23.5-26 

 (24.8); tarsus, 17.5-20 (18.9); outer anterior toe, 22-26 (23.8).<* 



Immature male. — Similar in coloration to adult female, but with 

 white of forehead more restricted. 



Immature female. — Similar to the immature male, but with little 

 if any red on sides of head, except on lores. 



Young male. — Similar to the immature male, but red of head 

 confined to lores and anterior margin of forehead, and white of fore- 

 head still more restricted, often tinged with, or replaced by, pale 

 yellow. 



Young female. — Similar to the immature female, but without 

 any red on head, the entire suborbital region green, the superciliary 

 region dull greenish blue or bluish green, except anteriorly, where? 

 together with forehead and lores, dull white. 



Western Mexico, in States of Sinaloa (Mazatlan; Presidio de 

 Mazatlan; Mocovito; Escuinapa; Alota; Rio Juana Gomez), 

 Guerrero (Acapulco), Oaxaca (La Parada; Santa Efigenia; Puerto 

 Angel; Huilo tepee; Juchitan; Chihuitan; Tehuantepec; Cacoprieto) 

 and Mexico (near City of Mexico), and Territory of Tepic (San Bias). 



Psittacus albifrons Spareman, Mus. Carls., fasc. 3, 1787, no. lii, pi. 52 (based on 

 White-crowned Parrot Latham, Synopsis Birds, i, 281, no. 88, var. B). — Bech- 

 STEiN, Lathams Uebers. Vogel, i, 1793, 713. — Shaw, Gen. Zool., viii, pt. 2, 



" Twelve specimens. 



