530 



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



from Alto Bonito distant only ten miles and but 500 feet lower, is nearer 

 columbianus. 



Dabeiba, 1; Caldas, 4; Salento, 1; Barro Blanco, 1; Honda, 1; Chi- 

 coral, 1; La Herrera, 1; La Holanda, 4; Andalucia (w. slope, 3000 ft.), 1; 

 near San Agustin, 1. 



Measurements. 



(3492a) Mimus gilvus columbianus Cab. 



M[imus] columbianus Cab., Mus. Hein., I, 1851, p. 82 (Colombia). 

 Mimus melanopterus Wtatt, Ibis, 1871, p. 320 (Santa Marta). 

 Mimus gilvus columbianus Allen, Bull. A. M. N. H., XIII, 1900, p. 180 (Santa 

 Marta; San Sebastian; El Mamon; Bonda; Cienaga). . 



This is merely a small form of M. g. tolimensis which doubtless occurs 

 typically throughout the arid coastal zone, and intergrades with tolimensis 

 as this zone merges into the more humid central Magdalena region. (See 

 remarks under that race). 



La Playa, 1; Alto Bonito, 1; Quibdo, 1. 



(3498) Donacobius atricapillus albovittatus Lafr. & d'Orb. 



Donacobius albovittatus Lapb. & d'Orb., Mag. Zool., VII, 1837, p. 19 (Chiquitos, 

 Bolivia; cf. Hellm., Nov. Zool., XXI, 1914, p. 158). 



Turdus atricapillus LiNrf., Syst. Nat., I, 1766, p. 295 {"Cap bon spei" — Bebl. & 

 Hart., substitute eastern Brazil). 



Donacobius atricapillus Wyatt, Ibis, 1871, p. 321 (Lake Paturia); Allen, Bull. 

 A. M. N. H., XIII, 1900, p. 180 (Cienaga). 



Donacobius brachypterus Madr., Orn. Monatsb., 1913, p. 22 (Aracatuca). 



Found in the Tropical Zone of the Atrato and Magdalena Valleys, 

 northward to eastern Panama, and at the eastern base of the Andes. 



