1914 BIRDS OF ARIZONA 37 



151. Aeronautes melanoleucus (Baird). 



Wll ITE-THROATED Sw IFT. 



Synonyms Acanthylis sa.vatalis; Cypsehis melanoleucus; Panyptila melano- 

 lcv.cn; Micropus melanoleucus. 



Status Breeds commonly on rocky cliffs and precipices throughout the 

 state. Re-mains through the winter in parts at least of southern and western Ari- 

 zona. 



1^2. Eugenes fulgens (Swainson). 



RIVOLI HUMMINGBIRD. 



Status A common summer visitant of some of the higher mountains of 

 southeastern Arizona. While apparently most numerous in the Huachuca and 

 Chiricahua mountains, it has been reported from the Santa Ritas, the San Luis 

 Mountains, the Santa Catalinas (one specimen, Rhoads, 1892, p. 1^17), and 

 Mount Graham (Henshaw, 1875!}, p. 379), the latter being probably its northern 

 limit. The vertical breeding range where the nests are located is about from 

 5000 to 7000 feet, but the adult males are usually to be found in high Transition, 

 above 8000 feet. 



153. Cyanolaemus clemenciae (Lesson). 



BLUE-THROATED HUMMINGBIRD. 



Synonym Cocligcna clemenciae. 



Status A rather uncommon summer visitant in the damp shady canons of 

 the mountain ranges of southeastern Arizona. Has been found in the Santa Cata- 

 iin?, Santa Rita, Chiricahua, San Luis, and Huachuca mountains. Nests and 

 eggs have been secrred in the last mentioned range (see Breninger, 1903, p. 435; 

 Willard, 1911, p. 46). 



154. Archilochus alexandri (Bourcier and Mulsant). 



BLACK-CHIN NED HUMMINGPIRB. 



Synonym Tro chillis ale.randri. 



Status Very common summer visitant, found generally in foothill country 

 and along wooded streams. Ranges north into the Mogollon Mountains in cen- 

 tral Arizona, where Mearns ( i89oa, p. 255) found it breeding in the pine belt, 

 casually still farther north: i specimen, Keam Canon, July 31 (Fisher, 1903, p. 

 35). Breeds along the Colorado River to the northern boundary of the state. 



155. Calypte costae (Bourcier). 



COSTA HUMMINGBIRD. 



Synonyms Selasphonis costae; Atthis costae ; Trochilus costae. 



Status Common summer visitant of the Lower Sonoran zone in southern 

 and western Arizona : reported north to Fort Grant and Tucson in the east, and 

 to Fort Mohave on the Colorado River. A few seem to remain through the win- 

 ter as it has been found both at Bill Williams River (Baird, 1858, p. 138) and in 

 'the extreme southwestern corner of Arizona (Bendire, 1895, p. 202) in Febru- 

 ary. Though found breeding only at low altitudes, it is of common occurrence 

 in the high mountains during the migrations, especially in the late summer : 

 Huachuca Mountains, 5500 feet, July (Swarth, 1904^ p. 17). 



