THE AUK: 
AEPO WU Ae) Bie wa OU RN Ak (Or 
CRNITHOEOGY: 
MOL, Vil. APRIL, 1880. No. 2. 
DESCRIPTIONS OF SUPPOSED NEW BIRDS FROM 
WESTERN NORTH AMERICA AND MEXICO. 
BY WILLIAM BREWSTER. 
Psittac ula cyanopyga pallida, new subspecies. 
SupsPec. CHAR.—Similar to P. cyanopyga, but with the bill rather 
stouter, the green of the upper parts duller and more ashy, that of the 
lower parts lighter and yellower. 
dad. (No. 14,389, collection of W. Brewster, Alamos, Sonora, Mexico, 
March 8, 1888; M. Abbott Frazar). Apple-green, darker and somewhat 
olivaceous on the crown, occiput, nape, back, and wings, tinged faintly 
with ashy on the sides of the neck, nape, and back; rump and outer webs 
of greater wing-coverts deep, shining, turquoise blue; axillaries and under 
wing-coverts a lighter shade of the same; outer webs of all except the 
outer four primaries and both webs of most of the secondaries tinged with 
verditer blue. Basal half of both mandibles horn color, terminal half 
yellowish white; wing, 3.50; tail, 1.57; bill: length from nostril, .53; 
greatest depth of upper mandible, .27; greatest depth of lower mandible, 
33 inch. 
Q ad. (No. 14,390, collection of William Brewster, Alamos, Sonora, 
Mexico, March 8, 1888; M. Abbott Frazar). Wholly lacking the blue on 
wings, axillaries and rump; otherwise precisely like the male. Wing, 
3.50; tail, 1.65; bill: length of culmen from nostril, .55; greatest depth 
of upper mandible, .25; greatest depth of lower mandible, .32 inch. 
Twelve specimens of this form, all taken the same day from the 
same flock, differ very constantly, in respect to the characters 
above pointed out, from five examples of P. cyanxofyga in the 
National Museum. Of the latter, three are from Mazatlan, one 
from Jalisco, and one from Manzanilla Bay. 
