I0O0 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
TIARIS OLIVACEA RAVIDA subsp. nov. 
Characters Similar to Tiaris olivacea pusilla Swainson,®° but 
darker ; fully adult male with black of upper surface of head deeper 
and extended down entirely over the hindneck; green of dorsal sur- 
fact duller, grayer; sides, flanks, and under tail coverts darker, 
grayer green; black of under surface, on average, more extensive, 
particularly on the upper abdomen and sides; female grayer green 
throughout. 
Description—Type, U.S.N.M. No. 461411, male, Isla Coiba, 
Panama, collected Jan. 31, 1956, by A. Wetmore (orig. No. 20557) : 
Crown and hindneck black, feathers of hindneck edged very lightly 
with yellowish olive; back, scapulars, and upper tail coverts yellow- 
ish olive ; rump light yellowish olive, with shaft lines of dusky neutral 
gray on the middle coverts ; inner webs of greater wing coverts Chae- 
tura black, with outer webs and tips yellowish olive ; alula and remiges 
Chaetura black, edged with yellowish olive; central pair of rectrices 
yellowish olive, with shafts Chaetura drab; remainder of rectrices 
dark hair brown, edged with yellowish olive ; lores and line extending 
back over eye cadmium yellow to above center of eye, then becoming 
apricot yellow, and continuing posteriorly as a narrow superciliary to 
above the anterior margin of the ear coverts; remainder of side of 
head black, edged faintly on ear coverts and sides of neck with yel- 
lowish olive; throat and upper edge of foreneck somewhat dull 
cadmium yellow, forming a squarely outlined patch; rest of foreneck, 
breast, anterior part of sides, and center of abdomen black, the latter 
tipped very lightly with pale olive-buff ; posterior edge of sides, flanks, 
and sides of abdomen dull light yellowish olive; under tail coverts 
reed yellow ; edge of wing narrowly reed yellow; under wing coverts 
dark neutral gray, edged with reed yellow; axillars yellowish olive; 
inner webs of inner remiges pale smoke gray. Bill black; tarsus and 
toes fuscous-black (from dried skin). 
Measurements.—Males (7 specimens), wing 50.2-53.9 (52.6), tail 
38.7-40.9 (39.8), culmen from base 10.2-11.3 (10.6, average of 6), 
tarsus 15.9-18.0 (17.1) mm. Females (5 specimens), wing 50.7-52.0 
(51.6), tail 37.0-38.1 (38.2), culmen from base 10.4-11.2 (10.7), 
tarsus 16.2-17.7 (17.0) mm. 
Type, male, wing 53.9, tail 40.9, culmen from base 11.3, tarsus 
16.8 mm. 
Range.—Isla Coiba, off the Pacific coast of Veraguas, Panama. 
80 Tiaris pusillus Swainson, Phil. Mag., n.s., vol. 1, No. 6, June 1827, p. 438. 
(Temascaltepec and Real del Monte, México. ) 
