Todd-Carriker : Birds of Santa Marta Region, Colombia. 249 



pi. [41] and text (descr. and range, ex Salvin and Godman). — d'Hamok- 

 viLLE, Bull. Soc. Z06I. France, VIII, 1883, 79 (descr.; crit.). — von Ber- 

 LEPSCH, Journ. f. Orn., XXXV, 1887, 335 (Santa Marta [region], ex Salvin 

 and Godman). — Boucard, Humming Bird, II, 1892, 74 (Sierra Nevada de 

 Santa Marta, in range; ref. orig. descr.). — Salvin, Cat. Birds Brit. Mus., 

 XVI, 1892, 341 (Sierra Nevada de Santa Marta; descr.; references). — 

 Boucard, Gen. Humming Birds, 1895, 65 (references; descr.; range). — 

 Simon, Cat. Fam. Trochilides, 1897, 35 (Sierra Nevada de Santa Marta, in 

 range). — Simon, Feuille des Jeunes Naturalistes, (3), XXVIII, 1898, S 

 (Sierra Nevada de Santa Marta, in range). — Bangs, Auk, XVI, 1899, 138 

 (Sierra Nevada de Santa Marta; Salvin and Godman's record). — Dubois, 

 Syn. Avium, I, 1900, 159 (ref. orig. descr.; range). — Haetert, Tierreich, 

 Lief. 9, 1900, 167 (references; descr.; range). — Sharpe, Hand-List Birds, 

 II, 1900, 133 ("Santa Marta," in range). — Allen, Bull. Am. Mus. Nat. 

 Hist., XIII, 1900, 120, 138 (Salvin and Godman's reference). — Brabourne 

 and Chubb, Birds S. Am., I, 1912, 139 (ref. orig. descr.; range). — Cory. 

 Field Mus. Z06I. Series, XIII, 1918, 273 ("Santa Marta"; references; 

 range). — Simon, Cat. Fam. Trochilidae, 1921, 205 (descr.), 384 (references; 

 range). 



Nineteen specimens : Paramo de Mamarongo and Paramo de Chiru- 

 qua. 



This interesting species is the representative of 0. guerinii of the 

 Eastern Andes, which it closely resembles in pattern of coloration. 

 Both sexes have the outer rectrices (except terminally) white on both 

 webs, while the throat-plumes of the males are deep blue instead of 

 green. It was discovered by Simons in the Sierra Nevada in July, 

 1879, at altitudes ranging from 11,000 to 14,000 feet, and up to the 

 present time has been known to science only by the specimens secured 

 by that collector, Mr. Brown having failed to meet with it. It was 

 found very sparingly in April, 1914, on the Paramo de Mamarongo 

 from 10,000 feet upwards. Bushes and shrubbery are scarce on this 

 paramo, hence the few birds found there. On the Paramo de Chiru- 

 qua it was more common, and was taken as low down as 12,000 feet, 

 and thence up to 16,000 feet, being most abundant between 13,000 and 

 15,000 feet. It is therefore essentially a species belonging to the 

 Paramo Zone. Almost invariably it alights on the flower from which 

 it is feeding, hanging on by its strong feet, instead of hovering before 

 it like most hummingbirds. It is very shy. 



