Todd-Carriker : Birds of Santa Marta Region, Colombia. 381 



is a tiny cup-shaped affair placed in an upright fork not far from the 

 ground. The eggs, however, have not been seen as yet. 



342. Atalotriccus pilaris pilaris (Cabanis). 



Colopterus pilaris Salvin and Godman, Ibis, 1880, 124 (Minca). — Sclater, 

 Cat. Birds Brit. Mus., XIV, 1888, 90 ("Santa Marta" and Minca). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, II, 1888, 18 (Minca). — Bangs, 

 Proc. Biol. Sec. Washington, XII, 1898, 136 ("Santa Marta"). — Allen, 

 Bull. Am. Mus. Nat., Hist., XIII, 1900, 150 (Bonda, Minca, and Cacagualito). 



Atalotriccus pilaris pilaris Ridgway, Bull. U. S. Nat. Mus., No. 50, IV, 1907. 

 374 (Santa Marta localities and references). — Chapman, Bull. Am. Mus. 

 Nat. Hist., XXXVI, 1917, 4441 ("Santa Marta"; crit.). 



Colopteryx\ pilaris pilaris Hellmayr, Rev. Fran^aise d'Orn., Ill, No. i2, 191 1, 

 25 ("Santa Marta," in range). 



Twenty-five specimens : Bonda, La Tigrera, Mamatoco, Minca, and 

 Fundacion. 



The use of the trinomial designation in this case is questionable, 

 since it is very doubtful if the form described under the name of A. 

 pilaris venezuelensis has any real standing, while the Orinoco Valley 

 form (griseiceps) seems specifically distinct. The case will be more 

 fully discussed in another connection. 



A rare bird at Rio Hacha, but fairly common in the semi-arid low- 

 lands and foothills, extending from Santa Marta around to Fundacion, 

 being more abundant at the latter place than elsewhere. The birds 

 keep rather low down in the shrubbery and smaller trees, and are 

 usually found in pairs. They have a loud harsh call-note entirely out 

 of proportion to their size, and much resembling that of certain species 

 of Thamnophilus. 



343. Todirostrum sylvia superciliare Lawrence. 



Todirostrum schistaceiceps (not of Sclater) Bangs, Proc. Biol. Soc. Washing- 

 ton, XII, 1898, 135 ("Santa Marta"). — Allen, Bull. Am. Mus. Nat. Hist., 

 XIII, 1900, ISO (Bonda). — Ridgway, Bull. U. S. Nat. Mus., No. 50, IV, 

 1907, 367 (Bonda and "Santa Marta,," in range; references). 



Todirostrum schistaceiceps superciliare Chapman, Bull. Am. Mus. Nat. Hist., 

 XXXVI, 1917, 438 (Bonda; crit.). 



Thirteen specimens : Bonda, Fundacion, Mamatoco, La Tigrera, Tu- 

 curinca, and Valencia. 



A careful study of the available series (fifty-five skins) of the bird 

 lately known as Todirostrum schistaceiceps shows that three geo- 

 graphic races can safely be recognized. First, there is the form rang- 



