1917.] Chapman, Distribution of Bird-life in Colombia. 207 



(163) Zenaida ruficauda ruficauda Bonap. 



Zenaida ruficauda Bonap., Consp. Av., II, 1854, p. 83 (New Grenada). 

 Zenaida bogotensis Lawr., Auk, II, 1885, p. 358 (Bogota; type in Am. Mus.). 



Two forms of this species occur in the Bogota region. One occurs in 

 the semi-arid Tropical Zone of the upper Magdalena Valley and doubtless 

 extends well up the flanks of the mountains; the other is a bird of the Tem- 

 perate Zone and is common on the Bogotd Savanna. While they differ in 

 color, their most tangible characters are in size; and the lack of measure- 

 ments with the original description have made it difficult to determine from 

 that alone, to which of the 'Bogota' forms Bonaparte's name might be 

 properly applied. Fortunately his type is contained in the British Museum 

 and at my request Mr. Charles Chubb has kindly supplied me with measure- 

 ments of it and two topotypes. These show that Bonaparte named the 

 larger Temperate Zone form (later described by Lawrence as Zenaida bogo- 

 tensis), and we may therefore without question accept Mr. Ridgway's name 

 of robinsoni for the small race of the Tropical Zone. 



Bogota Savanna, 9. 



(163a) Zenaida ruficauda robinsoni Ridgw. 



Zenaida ruficauda robinsoni Ridgw., Proc. Biol. Soc. Wash., XXVIII, 1915, p. 

 107 (Honda, Col.). 



Apparently restricted to the Tropical Zone in the Magdalena Valley 

 and eastward. In addition to the specimens listed below, we have also two 

 specimens from the lower Orinoco region (Maripa; Cd. Bolivar, Venez.). 

 From Zenaida ruficauda ruficauda, of the Temperate Zone of the Eastern 

 Andes, this race is distinguished by its sraaller size and paler coloration. 



Honda, 2; Chicoral, 2. 



(1636) Zenaida ruficauda antioquise subsp. nov. 



Char, svhsp. — Agreeing in the color of the upperparts with Zenaida r. ruficauda 

 Bonap. but with the underparts, especially posteriorly, much more vinaoeous, the 

 abdominal region and lower tail-coverts being vinaceous-fawn rather than orange- 

 cinnamon as in ruficauda; size smaller. Resembling Z. r. robinsoni in the color of 

 the underparts, but upperparts much darker and size larger. 



Type.— 'Ho. 132,926. Am. Mus. Nat. Hist.,rf' ad., Barro Blanco (7200 ft.), 

 Cen. Andes, Antioquia; Nov. 28, 1914; Miller & Boyle. . 



This race is probably restricted to the cleared or unforested portions of 

 the Temperate Zone at the northern end of the Central Andes in Antioquia. 



