626 Bulletin American Museum of Natural History. [Vol. XXXVI, 



Las Lomitas, 2; San Antonio, 8; Gallera, 1; La Sierra, 1; Miraflores, 3; 

 Salento, 4; Laguneta, 1; La Frijolera, 1. 



(4451) Ostinops alfredi sincipitalis Cab. 



Ostinops sincipitalis Cab., J. f. O., 1873, p. 309 (New Grenada). 



Apparently restricted to the Subtropical Zone of the western slope of the 

 Eastern Andes. 



Aguadita above Fusugasuga, 2; Anolaima, 2. 



(4451a) Ostinops alfredi neglectus Chapm. 



Ostinops sincipitalis neglectus Chapm., Bull. Am. Mus. Nat. Hist., XXXIII, 

 1914, p. 190 (Monteredondo, near Quetame, alt. 5800 ft.). 



Char, subsp. — Similar to 0. a. sincipitalis, but back more oHvaoeous and much 

 less brownish; the yellow frontal band narrower, and not continued backward in 

 superciliary stripes; the throat less yellow and more nearly the color of the breast. 



This form appears to be restricted to the Subtropical Zone of the eastern 

 slope of the Eastern Andes. Since describing it we have received two addi- 

 tional specimens of true sincipitalis from Anolaima on the western slope of 

 the Western Andes below Facatativa, and also an adult male of Ostinops 

 alfredi alfredi, a species not before represented in our collections, from 

 Zamora, southeastern Ecuador. The Anolaima specimens agree with others 

 from Fusugasuga in having the back much richer chestnut, the forehead 

 broadly yellow and yellow superciliaries well developed, characters in which 

 they differ from neglectus. 



The two specimens from near the summit of the Eastern Andes (alt. 

 5000 ft.) below Andalucia, in southeastern Colombia referred to {I. c.) as 

 having the frontal band even narrower than in neglectus show in this respect 

 an interesting approach toward alfredi in which this mark is reduced to the 

 minimum in the group. The Andalucia specimens are further Intermediate 

 in having the body more chestnut than the type of neglectus while the outer 

 rectrix of the male is olive and therefore like that of neglectus and sincipi- 

 talis; in the female, it is largely yellow on the inner web and thus like that 

 of alfredi! 



The bill of our single specimen of alfredi (an adult male, taken Oct. 28) 

 is basally horn color, the apical half whitish, the mandible being browner 

 than the maxilla, whereas in the Andalucia specimens, and in all other 

 examples of our large series of this group it varies from mustard-yellow to 

 deep chrome. These facts obviously suggest the intergradation of alfredi 

 and sincipitalis' through neglectus. 



