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



(3374) Heleodytes albobrunneus harterti Berl. 



Heleodytes harterti Bekl., Ornis, XIV, 1907, p. 347 (San Jos6, R. Dagua, Col.). 

 Heleodytes albobrunneus harterti Hellm., P. Z. S., 1911, p. 1088 (El Tigre, Rio 

 Tamand,). 



A topotype from San Jose shows admirably the characters of blackish 

 back, wings and tail on which this race is founded, and they are shown 

 almost equally well by a specimen from Dabeiba on the east side of the 

 Atrato Valley, and one from El Real, eastern Panama, while a molting 

 specimen taken May 16, 1915, at Cituro on the Cupe River, eastern Panama, 

 is essentially a duplicate of the type so far as its new plumage is concerned, 

 but the still unshed, worn rectrices and remiges agree with those of Panama 

 specimens of albobrunneus. It does not follow that harterti is not a tenable 

 form since even in fresh plumage, albobrunneus is not so dark as harterti, 

 but it does follow that the differences between the two are bridged by sea- 

 sonal variation in harterti, which, in worn plumage, cannot be distinguished 

 from albobrunneus. A November specimen from the Rio Salaqui, a tribu- 

 tary of the lower Atrato exactly matches a "Panama" bird which is un- 

 fortunately without date of collection, and, in this instance, the Panama 

 specimen is in somewhat more worn plumage. 



In Juvenal plumage the crown is blackish or brownish gray (La Vieja, 

 cf, 9 Oct.; Tapaliza, 9 , Feb. 19) and with the advance toward maturity 

 it passes through a mottled stage (Rio Salaqui, Mch. 13, cf ; El Real, Dec. 

 28, 9 ). In adult plumage both sexes have the entire head white. In 

 addition to the Colombian specimens listed below we have five from eastern 

 Panama. 



Salaqui, 1; R. Atrato, 1; Dabeiba, 1; Bagado, 1; La Vieja, 3; San 

 Jos^, 1. 



(3376) Heleodytes turdinus hypostictus {Gould). 

 Campylorhynchus hypostictus Gould, P. Z. S., 1855, p. 68 (R. UcayaH, Peru). 



Found by us only in Amazonian Colombia, but occurring in Bogota 

 collections. Our six specimens have the outer webs of the wing-quills and 

 also the outer tail-feathers with rusty marks or broken bars, a character 

 wanting or but slightly suggested in five specimens from Peru and Bolivia. 

 In a Bogota skin, however, this rusty marking is barely evident in the wings 

 and absent from the tail. If the Colombian bird proves to be separable it 

 would stand as Heleodytes turdinus striaticollis Scl. (P. Z. S., 1857, p. 272, 

 New Grenada). 



La Morelia, 2; Florencia, 4. 



