N.E.Z.C: 
36 BANGS — CHIRIQUI BIRDS [ei ae 
Type, from Boquete, southern slope of Volcan de Chiriqui, 4000 feet alti- 
tude, ¢ adult, no. 8539, coll. of E. A. and O. Bangs, collected Feb. 1, 1901, 
by W. W. Brown, Jr. 
Characters.— Similar to true MZ. placens (Scl.) of southern Mexico and 
Guatemala; but greater coverts edged with much lighter green (in true 
MM. placens the greater coverts are not edged with lighter); throat less gray, 
more yellowish; sides of face paler; sides of pileum less grayish ; back decid- 
edly less ashy. 
Color.— Sides of pileum grayish olive; a large semi-concealed vertical crest 
bright yellow; an indistinct superciliary stripe grayish; sides of face dull yel- 
lowish gray, speckled with dusky; throat pale yellowish gray; breast much 
shaded and indistinctly streaked with olive; belly, sides, and under tail 
coverts, sulphur yellow; back olive green, rather more dusky on hind neck, 
paler and brighter on lower back, rump and upper tail coverts; wings hair 
brown, the lesser coverts mostly olive green, secondaries, tertials and greater 
coverts conspicuously edged with pale yellowish green; tail dusky olive, edged 
with olive green; bend of wing and lining of wing sulphur yellow. 
* 
MEASUREMENTS (in millimeters). 
No. Sex and age Wing Tail Tarsus Culmen 
8539 & ad. 70. 68. 18.5 13.0 
8540 & ad. 67. 64. 18.0 litoks 
8541 & yg. 64. 59. 16.5 10.5 
8542 d yg. 60. 56. 16.5 II.0 
Remarks. 
Costa Rica, Chiriqui and Panama specimens seem 
all referable to this new subspecies, which is quite different from 
true AZ. placens of Mexico and Guatemala. The easiest character 
to tell it by is the pale edging of the greater wing coverts, which 
is not shown at all in the Mexican bird. 
Tyranniscus parvus Lawr. 
Two adults, male and female, Boquete, 4ooo feet, January. 
Elaenia pagana subpagana (Scl. and Salv.). 
One adult female, Boquete, 4000 feet, Jan. 22. 
