1917.] Chapman, Distribution of Bird-life in Colombia. 419 



consideration, which Lawrence, Sclater, Ridgway, Oberholser, and Chap- 

 man have each determined differently! Allen, Ridgway, Hellmayr and 

 Oberholser agree in referring Santa Marta specimens to this form, and in 

 default of a more definite place it may be well to accept Valparaiso, Santa 

 Marta, as the type-locality. 



Xovita, 2; Baudo, 1; Barbacoas, 1; Puerto Valdivia, 1; Rio Frio, 2; 

 Honda, 1. 



(2526) Dendrocincla lafresnayei phseochroa Berl. & Hart. 



Dendrodnda [sic] phceochroa Beel. & Habt., Nov. Zool., IX, 1902, p. 67 (Mun- 

 duapo, Orinoco). 



To this form I refer three specimens from Villavicencio. They agree 

 essentially with five specimens from the middle and upper Orinoco but the 

 , throat is not quite so pale. They vary markedly in size but the largest 

 about equals average specimens of phceochroa. 

 Villavicencio, 3. 



(2539) Xiphorhynchus guttata guttatoides (Lafr.). 

 N[asica] guttatoides Lafk., Rev. et Mag. de Zool., 1850, p. 387 (Loreto, Peru). 



A specimen from Florencia agrees with a 'Napo' and also a 'Bogota' 

 specimen, both localities whence Hellmayr (Nov. Zool., XIV, 1907, p. 59) 

 records this form. 



Florencia, 1. 



(2542) Xiphorhynchus aquatorialis sequatorialis (Berl. & Tacz.). 



Dendromis erythropygia cequatorialis Bebl. & Tacz., P. Z. S., 1883, p. 563 (Chimbo, 

 alt. 1000 ft., w. Ecuador). 



Dendromis triangularis cequatorialis Hellm., P. Z. S. 1911, p. 1153 (Ndvita; El 

 Tigre, 320 ft.) 



Inhabits the Tropical Zone of the Pacific slope and eastward into An- 

 tioquia. Our specimens have been compared with a series from western 

 Ecuador. The occurrence of typical specimens of X. triangularis at Cocal 

 on the western slope of the Western Andes at an altitude of 4000 feet (the 

 lower border of the Subtropical Zone) in connection with the constancy 

 in color maintained by that species throughout its wide range, induces me 

 to believe that it does not intergrade with cequatorialis. The differences 

 between the two species, described by Hellmayr (Z. c.) are shown by our 

 large series of both forms. 



