Ja i " 02 3 °] BANGS CHIRIQUI BIRDS 45 



Xenops genibarbis 111. 



One adult male, Caribbean slope of Volcan de Chiriqui, 6200 

 feet, June 12. 



Xenops rutilus Licht. 

 Two males, Boquete, 4500 and 5000 feet, March and April. 



Sclerurus canigularis Ridg. 



Two adults, male and female, Boquete, 5800 and 5600 feet, 

 March 19. 



Sclerurus mexicanus pullus 1 subsp. nov. 



Two adults, male and female, Boquete, 4500 and 5000 feet, 

 April. 



Type, from Boquete, southern slope of Volcan de Chiriqui, 5000 feet alti- 

 tude, $ adult, no. 8566, coll. of E. A. and O. Bangs, collected April 20, 1901, 

 by W. W. Brown, Jr. 



Characters. — Similar to true S. mexicanus Scl. of southern Mexico, but 

 much darker throughout ; top of head dusky, almost black, instead of brown ; 

 back several shades darker brown ; rump very dark, almost walnut brown — 

 bright chestnut in true .S. mexicanus ; throat chestnut, instead of hazel; belly 

 and under tail coverts much darker; chin and lores dusky — plain hazel in 

 true C. mexicanus. 



measurements (in millimeters). 



Reinarks. — The two examples from Chiriqui stand apart from 

 the whole series of S. mexicanus with which I have compared 

 them, their very dark coloration not being matched even in speci- 



1 Pullus — dark-colored. 



