288 Bulletin American Museum of Natural History. [Vol. XXXVI, 



(1101) Saucerottia saucerottei {Delatt. ds Bourc). 



Trochilus saucerottei Delatt. & Botjbc, Rev. Zool., 1846, p. 311 (Call, Col.). 

 Saucerottea saucerotti Simon & Dalm., Ornis, XI, 1901, p. 221 (Call; La. Tigra; 

 Las Cruces). 



Inhabits the semi-arid Tropical Zone locally on the western slope of the 

 Western Andes, the Cauca Valley and slopes arising from it. 



Dabeiba, 3; Alto Bonito, 4; Caldas, 5; Las Lomitas, 1; San Antonio, 1; 

 Cali, 9; La Manuelita, 1 ; Miraflores, 5; Rio Frio, 4. 



(1102) Saucerottia viridigaster {Bourc. & Muls.). 



Trochilus viridigaster Bourc. & Muls., Ann. Sc. Phys. et Nat. Lyon, VI, 1843, 

 p. 42 (Fusugasugd,, Col.). 



Inhabits open places in the Tropical Zone of the Eastern Aides. We 

 found it only on the eastern slopes of the range though the type is said to 

 have come from the western slope. 



Quetame, 8; Buena Vista, 4; Villavicencio, 1. 



(1111) Amizilis tzacatl tzacatl (De la Lime). 



Trochilus tzacatl De la Llavb, Registro Trimestre, II, No. 5, 1833, p. 48 (Mexico). 

 Amazilia riefferi Wtatt, Ibis, 1871, p. 378 (San Nicholas). 



Amazillis fusdcaudata Allen, Bull. A. M. N. H., XIII, 1900, p. 139 (Bonda; 

 Cacagualito). 



Inhabits the Tropical Zone. The identification of Colombian specimens 

 of Amazilis tzacatl is largely a matter of opinion. Deprive the specimens 

 listed below of their labels and probably no two ornithologists would agree 

 as to their proper names. Hellmayr (P. Z. S., 1911, p. 1183) restricts 

 A. t. jtwunda to western Colombia including Antioquia, and applies the name 

 A. t. fusdcaudata (Fraser) to the form of eastern Colombia. Ridgway 

 (Bull. U. S. N. M., 50, p. 409) restricts the name jucunda to specimens from 

 western Ecuador and southwestern Colombia, and refers all other Colombian 

 specimens to the Central American form A. t. tzacatl. With an abundance of 

 material for examination, I incline to Ridgway's views. In specimens from 

 the Bogota region the bill averages smaller, but the character is by no means 

 diagnostic and I cannot see any reason for recognizing an East Andean form. 



Most of the specimens from western Colombia can be referred to one 

 form quite as easily as to the other, but on general faunal principles I limit 

 the range of jucunda to that part of the Pacific coast from the San Juan 



