Todd-Carriker : Birds of Santa Marta Region, Colombia. 437 



region of Colombia, which, when compared with topotypical examples 

 from Ecuador, prove to be lighter (less sooty) and less uniform be- 

 low, and are clearly entitled to subspecific recognition. They differ 

 from the Santa Marta skins in being darker below and more glossy 

 above; the tail, too, is more deeply forked, but there is every reason to 

 believe that they belong to the same form. As pointed out by Baird 

 (I.e.) and by von Berlepsch (Proceedings Zoological Society of Lon- 

 don, 1884, 287) it is very doubtful if Hirundo cinerea of Gmelin 

 really refers to the bird afterwards called PetrocJiclidon murina by 

 Cassin. 



These birds were taken around the summit of the " Cerro Quemado," 

 at an altitude of 8,300 feet, where they seemed to be breeding in the 

 cliff which drops perpendicularly down from the summit on the south 

 side. There seemed to be about thirty in this colony, but they were 

 very hard to shoot. None were seen at any other point. 



404. Stelgidopteryx ruficollis aequalis Bangs. 



Stelgidopteryx itropygialis (not Cotyle uropygialis Lawrence) Bangs, Proc. 



Biol. Soc. Washington, XII, 1898, 142 ("Santa Marta")- — Allen, Bull. 



Am. Mus. Nat. Hist., XIII, 1900, 171 (Bonda). 

 Stelgidopteryx ruficollis aqualis Bangs, Proc. New England Zool. Club, II, 



1901, 58 ("Santa Marta"; orig. descr. ; type now in coll. Mus. Comp. 



Zool.). — Dubois, Syn. Avium, II, 1903, 1079 ("Santa Marta," in range; 



ref. orig. descr.). — Allen, Bull. Am. Mus. Nat. Hist., XXI, 1905, 278 



(ref. orig. descr.; syn.). — Hellmayr, Nov. Zool., XIII, 1906, 13 ("Santa 



Marta." in range). 

 Stelgidopteryx crqualis Brabourne and Chubb, Birds S. Am., I, 1912, 328 



(ref. orig. descr.; range). 

 Stelgidopteryx ruficollis uropygialis Ridgway, Bull. U. S. Nat. Mus., No. 50, 



III, 1904, 63 ("Santa Marta"; meas. ; references). 



Fourteen specimens : Bonda, Santa Marta, Don Diego, Tucurinca, 

 and Fundacion. 



September and October specimens are in the freshest plumage. May 

 birds are worn and faded, with the yellow of the abdomen very pale, 

 almost white. No. 49,604 (October 12) is just completing the moult 

 of the remiges. 



The present form was described by Mr. Bangs in 1901 from a Santa 

 Marta specimen, but is known to range over the most of northern 

 South America. In the Santa Marta region it is a fairly common bird 

 throughout the lowlands of the Tropical Zone, except in the arid Goa- 



