7O SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 134 
cover. The Coiba specimens are so much darker than those of the 
adjacent mainland that they require a name. 
CAMPTOSTOMA OBSOLETUM ORPHNUM subsp. nov. 
Characters.—Similar to Camptostoma obsoletum flaviventre Sclater 
and Salvin,?® but darker, more olive, above, particularly on the crown. 
Description.—Type, male, Isla Coiba, Panama, collected Jan. 29, 
1956, by A. Wetmore (orig. No. 20521) : Pileum and upper hindneck 
Chaetura black, the tips of the longer feathers edged lightly with deep 
olive; lower hindneck, back, and scapulars deep olive; rump and 
upper tail coverts grayish olive; wing coverts and remiges blackish 
mouse gray ; lesser wing coverts edged lightly with deep olive ; middle 
and greater wing coverts tipped with white, forming two well-marked 
wing bars; tertials edged narrowly with white; secondaries edged 
lightly with Marguerite yellow; rectrices dark mouse gray, edged 
faintly with deep olive toward the base, and tipped narrowly with dull 
white ; throat and upper foreneck dull white ; lower foreneck and chest 
primrose yellow, changing to dull naphthalene yellow on lower breast 
and abdomen; sides of breast grayish olive; under tail coverts, edge 
of wing, and under wing coverts Marguerite yellow, the outer series 
of the last-mentioned being mouse gray centrally ; inner webs of pri- 
maries and secondaries edged narrowly with dull white. Bill fuscous, 
except for the base of the mandible, which is wood brown, and the 
gape, which is honey yellow; tarsus and toes dull black (from dried 
skin). 
Measurements.—Males (2 specimens), wing 52.0-52.1 (52.0), tail 
39.2-39.3 (39.2), culmen from base 9.9-10.1 (10.0), tarsus 13.2-13.9 
(13.5) mm. Females (2 specimens), wing 47.1-47.2 (47.1), tail 35.0- 
35.2 (35.1), culmen from base 9.7-10.4 (10.0), tarsus 13.6-14.0 
(13.8) mm. 
Type, male, wing 52.0, tail 39.3, culmen from base 9.9, tarsus 13.9 
mm. 
Range.—Isla Coiba, off the Pacific coast of Veraguas, Panama. 
Remarks.—Darker coloration sets the four specimens of this race 
off definitely from the series of 37 Camptostoma o. flaviventre that I 
have had available for comparison. In addition the bill appears very 
faintly larger, a minor difference that perhaps would disappear in 
a larger series of measurements, since it is equaled by the larger 
specimens of flaviventre. 
The subspecific name is taken from the Latin orphnus, dark, dusky. 
19 Camptostoma flaviventre P. L. Sclater and O. Salvin, Proc. Zool. Soc. Lon- 
don, 1864 (February 1865), p. 358. (Panama.) 
