Annals of the Carnegie Museum. 



It may be added that recent researches have shown that this species 

 is not confined to the Santa Marta region, as at first supposed, but has 

 an extensive range in Colombia and Venezuela. 



497. Tiaris bicolor omissa (Jardine). 

 Eleven specimens : Rio Hacha. 



Allowing for differences in season and degree of wear, this series 

 agree well with another from Porto Rico, running through precisely 

 the same variations in plumage, and also with specimens from north- 

 ern Venezuela. Typical Tobago skins have not been compared, how- 

 ever, nor have any been examined from the interior of Colombia. 

 Coming as they do from a different faunal area, the latter may be 

 distinct. In the Santa Marta region the species was met with only in 

 the vicinity of Rio Hacha, where it was wont to frequent the more 

 open places in the thorny scrub-growth, keeping on or near the ground, 

 and at Fonseca. Like Coryphospingus pileatus brevicaudus, Rich- 

 mondcna phcenicea, Saltator orenocensis rufescens, etc., it seems to be 

 a representative of the Arid Tropical Zone of northern Venezuela. 



498. Volatinia jacarini atronitens Todd. 



Volatinia jacarini (not Tanagra jacarini Linnaeus) Salvin and Godman, Ibis, 

 1879, 200 (San Jose).— Sharpe, Cat. Birds Brit. Mus., XII, 1888, 152 (San 

 Jose). 



Volatinia jacarini splendens (not Fringilla splendens Vieillot) Bangs, Proc. 

 Biol. Soc. Washington, XII, 1898, 139 ("Santa Marta")- — Allen, Bull. 

 Am. Mus. Nat. Hist., XIII, 1900, 165 (Bonda, Onaca, Masinga Vieja, and 

 Cacagualito) ; XXI, 1905, 291 (Bonda; descr. nest and eggs). 



Additional records: Chirua, La Concepcion (Brown); Don Amo 

 (Smith). 



Twenty-three specimens: Bonda, Don Diego, Santa Marta, Cincin- 

 nati, Ka Tigrera, Minca, and Mamatoco. 



On the name of this species compare Todd, Proceedings Biological 

 Society of Washington, XXXIII, 1920, 73. 



This species is found in all localities under 2,500 feet where waste 

 lands, grass-lands, or savannas exist, but on the west slopes of the 

 San Lorenzo it straggles up to 4,000 feet. It was not noted by the 

 writer much above 2,000 feet in the Sierra Nevada proper, but Simons 

 secured a single specimen at San Jose, at an altitude of 5,000 feet. 

 In habits it is very similar to the species of Sporophila, with which 



