190 LIFE HISTORIES OF NORTH AMERICAN BIRDS. 



which are larger than the supposed eggs of this species. The great difference 

 in the size of these two birds proves conclusively that there must be a mistake 

 either in identification or in the measurements of the eggs as described by him. 



I am indebted to Mr. W. W. Price for a couple of nests of this species and 

 a broken egg, which, however, is so badly crushed that it is impossible to 

 restore it and give accurate measurements. Both of these nests were taken in 

 the Huachuca Mountains, in southern Arizona. The best preserved one of the 

 two measures 2^ inches in outer diameter by 2 inches in depth; its inner diam- 

 eter is 1J by l^ inches in depth. It is composed of soft, silky plant fibers, and 

 is thickly coated exteriorly with small pieces of lichen, and lined with fine 

 down and one or two soft, fluffy feathers, apparently those of a species of Tit- 

 mouse. It resembles the nest of the Ruby-throated Hummingbird very closely 

 in its general make up, but is naturally considerably larger. It was found by 

 Mr. L. Miller on June 22, 1894, at an elevation of about 7,000 feet, saddled on 

 a walnut branch about 10 feet from the ground, and contained one young nearly 

 able to fly. The other, which is not quite so well preserved, was found by Mr. 

 Price in the same mountains on June 4, 1893, placed on a slender branch of a 

 maple over running water, in a deep, narrow canyon, at about 6,000 feet eleva- 

 tion. The male was seen a short distance away from the nest; the female hovered 

 about while the branch was being cut off, and was secured. The single fresh 

 egg the nest contained was accidentally broken. 



Mr. Price writes me: " Eugenes fulgens is found all through the pine regions 

 of southern Arizona. It was not rare in the Huachuca and Chiricahua moun- 

 tains, but I have never seen it below 6,500 feet elevation, and I have found 

 it above 9,500 feet. During the flowering season it feeds extensively in the 

 flowers of the Agave parryi in the Huachuca Mountains. In the Chiricahuas I 

 have found it early in the mornings in open glades, feeding on the flowers of an 

 iris. It delights in open woods more than in damp ones, as is the habit of the 

 Blue-throat, Cmligena clemencies." 



There are no eggs of the Rivoli Hummingbird in the Unites States National 

 Museum collection. 



67. Coeligena clemencise Lesson 



BLUE-THROATED HUMMINGBIRD. 



Ornisyma clemencice Lesson, Oiseaux Moucbes, 1829, 216, PI. 80. 



Gceligena clemencice Lesson, Index General et Synoptique des Oiseaux du Genre Trocliilus, 

 1832, p. XVIII. 



(B — , C — , R — , C — , U 427.) 



Geographical range: Mountains of southeastern Arizona, southwestern New 

 Mexico, and the tablelands of Mexico; south to Guerrero and Oaxaca. 



The geographical range of the Blue-throated Hummingbird, also sometimes 

 called "Blue-throated Casique," a slightly larger species than the preceding, is 

 very similar, and, like the Rivoli Hummer, it is only a summer resident in the 



