FAMILY PIPRIDAE 35I 



SCHIFFORNIS TURDINUS ACROLOPHITES subsp. nov. 



Characters. — Similar to Schifjornis hirdinus dumicola but darker, 

 decidedly more olive in general coloration ; both chin and throat 

 chestnut-brown . 



Description. — Holotype, U.S. National Museum no. 484592, J* 

 from 1425 meters elevation on Cerro Mali, Darien, collected Febru- 

 ary 22, 1964, by A. Wetmore (original no. 25941). Crown, hindneck, 

 back, and scapulars between deep olive and dark olive, changing on 

 rump and upper tail coverts to deep olive ; shorter feathers of fore- 

 head with grayish bases, faintly visible beneath the darker tips ; wings 

 basally fuscous-black, with the outer webs of wing coverts and 

 secondaries olive-brown ; outer webs of primaries narrowly edged 

 with buffy olive-brown ; tail fuscous-black, with the outer webs dull 

 olive-brown ; side of head deep olive ; chin and upper foreneck buffy 

 brown ; lower foreneck, breast, and sides deep olive ; center of abdo- 

 men and under tail coverts between citrine drab and dark olive ; 

 axillars and under wing coverts light grayish olive. 



A male from Cerro Mali, Darien, February 22, 1964, had the iris 

 brown ; cutting edge of maxilla at base pale neutral gray ; rest of 

 maxilla and anterior half of mandible black ; rest of mandible dark 

 neutral gray ; tarsus, toes, and claws dark neutral gray. 



Measurements. — Males (11 from Cerro Mali and Cerro Tacarcuna, 

 Darien), wing 91.0-93.4 (92.3), tail 64.0-70.3 (68.7), culmen from 

 base 16.6-19.5 (17.7), tarsus 21.3-23.3 (22.3) mm. 



Females (2 from Cerro Mali, Darien), wing 85.0, 85.6; tail 58.8, 

 63.1 ; culmen from base 17.0, 18.1 ; tarsus 22.4, 22.4 mm. 



Resident. Fairly common in the upper Tropical and lower Sub- 

 tropical Zones across the higher levels of Cerro Mali and Cerro 

 Tacarcuna, Darien, extending beyond the international boundary into 

 northern Department of Choco, Colombia. 



This is a darker, more olive population, found in the higher moun- 

 tains in eastern Darien. In early collections from this area specimens 

 were labeled "Tacarcuna" without regard to the elevation at which 

 they were collected. Part, taken near the old Tacarcuna village site 

 (at 600 meters elevation or less) are the paler panamensis. Others 

 from the top of the ridge, at above 1400 meters, are definitely dif- 

 ferent in darker coloration. Early attempts were made to identify 

 these with S.t. "fiirvus" {= dumicola) of the Subtropical Zone of 

 Chiriqui, which is more rufescent, and from which they differ in more 

 olive hue. The highland form here described continues in Choco, 

 western Colombia, apparently to the Serrania de Baudo. S.t. rosen- 



