1917.] Chapman, Distribution of Bird-life in Colombia. 509 



fortunately I have but one specimen from Antioquia and it agrees with the 

 figure of the type in having the back barred. I have now, however, five 

 specimens from Laguneta and the region above Salento (alt. 9000 ft.) the 

 fauna of which is essentially Antioquian, which can be matched by my 

 original series of seven specimens from the Andes west of Popayan. While 

 none of the Laguneta birds has the back barred as in the Antioquian bird, 

 two of them have faint traces of this marking (as do also two of the West 

 Andean birds) and in view of the locality whence they came it is probable 

 that they represent true olivascens, the barring on the back of which is 

 probably a variable character. 



Turning now to three specimens from the Eastern Andes, including 

 one from near Bogota, we find that they can be matched by specimens from 

 the two Cauca region series just mentioned. Only a faint indication of 

 dorsal bars is evident, but as it appears that these bars may be wanting 

 in specimens from the faunal region whence oKvascens was described it 

 seems probable that they form an individual rather than racial marking. 



The black eye-stripe, to which Matschie (1. c.) refers as characterizing 

 olivascens, is apparently a darkening of the loral and postocular region which 

 has been emphasized by the artist in Sharpe's plate (1. c). This marking 

 is present in some and absent in other specimens from the same locality and 

 is clearly individual. 



Taken as a whole the Cauca series of twelve specimens presents consid- 

 erable variation in color, some individuals being much more rufescent than 

 others. Only four of the whole series of seventeen birds have white on the 

 forehead, and in only one of these does it approach the extent shown by the 

 bird in Sharpe's plate. 



Andes, west of Popayan (alt. 10,340 ft.), 2; Cocal, (alt. 6000 ft.), 4; 

 Cocal (alt. 4000 ft.), 1; Laguneta, 2; above Salento (9000 ft.), 3; Anda- 

 lucia (7000 ft.), 2; El Roble, 1. 



(3371) Heleodytes minor bicolor Pelz. 



Heleodytes bicolor Pelz., Ibis, 1875, p. 330 (Bogotd,). 



Heleodytes griseus Wtatt, Ibis, 1871, p. 321 (Santa Marta) ; Allen, Bull. 

 A. M. N. H., XIII, 1900, p. 180 (Santa Marta; Cacagualito; Bonda). 



Found in the Tropical Zone of the Magdalena Valley from the coast at 

 least to Honda. Differs constantly from H. griseus in its black crown and 

 foreback, unbarred wings and tail. From H. minor, of the lower Orinoco, it 

 may be known by its more chestnut back, etc. and black foreback. 



Turbaco, 4; La Playa, 7; Calamar, 3; Carpinteria, 1; Remolino, 2; 

 Honda, 1. 



