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



headed form of the Caribbean coast region, Trinidad, and the Guianas, 

 while those from this zone at the base of the Eastern Andes are referable 

 to the yellow-headed form, P. e. berlepschi. Both races, therefore, are 

 found in the Bogota region and their occurrence together in 'Bogota' col- 

 lections has doubtless led to the belief that the characters separating them 

 are individual rather than racial. 



With somewhat over one hundred males before me representing the 

 greater part of the geographic range of the species, I find no difficulty, how- 

 ever, in distinguishing two perfectly valid forms the distribution of which, 

 aside from the light here thrown on birds from the Bogota region, is cor- 

 rectly given by Ridgway (Bull. 50, IV, pp. 743, 748). Females of erythro- 

 cephala are yellower, particularly below, than those of berlepschi. 



R. Salaqui, 1; Los Cisneros, 1; Puerto Valdivia, 6; Rio Frio, 1; west 

 of Honda, 3. 



(3116a) Pipra erythrocephala berlepschi Ridgw. 



Pipra erythrocephala herlepschi Ridgw., Proc. Biol. Soc. Wash., XIX, 1906, p. 117 

 (Nauta, northeastern Peru). 



Inhabits the Tropical Zone at the eastern base of the Eastern Andes. 

 Our specimens have the crown slightly more orange than it is in twenty- 

 two old ' Napo ' skins, but agree with three specimens collected at Zamora, 

 southeastern Ecuador, in October, 1913. 



Florencia, 3; La Morelia, 2; Buena Vista, 4; Villa vicencio, 1. 



(3118) Pipra mentalis minor Hart. 



Pipra mentalis minor Habt., Nov. Zool., 1898, p. 489 (Cachabi, n. w. Ecuador); 

 Hellm., p. Z. S., 1911, p. 1139 (Rio Cajon; Sipi; N6vita; Noanamd,). 



Restricted to the Tropical Zone of the Pacific coast. As Hellmayr 

 (Z. c.) has shown, west Colombian specimens agree with Ecuadorian birds 

 in color but are nearer Panama specimens (ignifera) in size. 



Baudo (3000 ft.), 1; Noanama, 2; N6vita, 1; San Jos^, 1; Barbacoas, 4. 



(3120a) Pipra leucocilla minimus nom. nov. 



Pipra leucocilla minor Chapm., Bull. A. M. N. H., XXXIII, 1914, p. 623 (Cocal, 

 Col.). 



Char, suhsp. — Similar to Pipra leucocilla anthracina (Ridg.) but much smaller, 

 the lower tail-coverts not always tipped with grayish. Wing, 54; tail, 22.5-2.5; 

 culmen, 8-9; breadth of bill at nostril, 4-5 mm. 



