VOl 'l^ XI1 ] Chapman, The Genus Scytalopus Gould. 415 



trace of white; flanks and under tail-coverts bright ochraceous-tawny or 

 ochraceous-orange, unbarred; feet brownish; bill black; the mandible, 

 except on its rami, as dark as the maxilla; wing, 58; tail, 39; tarsus, 24; 

 culmen, 11.5. 



Remarks. — This species, which further illustrates the apparent 

 exhaustlessness of the Bogota region as well as of the genus Scytal- 

 opus, is based on a specimen presented to the American Museum 

 by Hermano Apolinar Maria, the eminently efficient Director of the 

 Instituto de la Salle in Bogota. 



Comparison with our large series of all the other known Colom- 

 bian forms of Scytalopus leaves no doubt in my mind of its specific 

 distinctness. 



In the species possessing barred flanks in the adult this character 

 is very constant. For example, not one of a series of twenty-five 

 specimens of S. microptcrus, including juvenal, immature, and adult 

 plumages is without conspicuous bars in this region. On the other 

 hand, not one of four adult specimens of S. griseicollis has the flanks 

 barred. The absence of bars on flanks and rump, upper and under 

 tail-coverts is therefore significant. Of the Colombian species 

 which have these parts tawny, S. griseicollis has heretofore been the 

 only one known without bars. Although S. infasciatus agrees with 

 griseicollis in this important respect, the specific distinctness of the 

 two birds is indicated by their differences in color, griseicollis being 

 much paler with a whitish abdomen, and by the fact that both are 

 found in the Temperate Zone of the same range. 



Scytalopus infasciatus however, evidently ranges downward to 

 the upper parts of the Subtropical Zone since a specimen from El 

 Roble (altitude 8,000 ft.) above Fusugasuga, is apparently to be 

 referred to this species. It differs from the type in having some 

 indication of bars in the flanks, a fact which I take to indicate im- 

 maturity. Not dissimilar markings are shown by immature speci- 

 mens of S. griseicollis, a species to which infasciatus is so nearly 

 related that it is probable that in juvenal plumage infasciatus, as 

 well as griseicollis, is barred. This El Roble specimen has a close 

 superficial resemblance to S. microptcrus, but its much more slender 

 bill, agreeing in size with that of griseicollis, distinguishes it. 



Specimens examined. — Colombia: Paramo de Beltran, 1; El 

 Roble, 1. 



