188 LIFE HISTORIES OP NORTH AMERICAN BIRDS. 



Di-. Fisher says: "The males uttered at short intervals a series of notes 

 which, when a number joined in the performance, produced a not unpleasant 

 impression." 



The eggs of this species still remain among the special desiderata in 

 oological collections. I have never seen any, and there are none in the United 

 States National Museum. Mr. Walter E. Bryant gives the following description 

 of them: "More than a dozen years ago an imperfect set of five fresh, unblown 

 eggs of the White-throated Swift were presented to me by a young man in 

 Contra Costa County, California. They were taken from a nest in a crevice 

 in the back of a tunnel-shaped cave in the side of a cliff, about 20 feet above 

 the base. In color the eggs are pure white, narrowly elliptical in form, but 

 rather smaller at one end. They measured 0.87 by 0.53, 0.88 by 0.53, 0.88 by 

 0.52, and 0.86 by 0.50 inch (or 22.10 by 13.46, 22.35 by 13.46, 22.35 by 13.21, 

 and 21.84 by 12.70 millimetres); the fifth was too much damaged to measure 

 accurately. The eggs were collected on June 6, 1876."^ 



From four to five eggs appear to be laid to a set, and probably only a 

 single brood is reared in a season. 



Family TROCHILID^. Hummingbirds. 

 66. Eugenes fulgens (Swainson). 



RIVOLI HUMMINGBIRD. 



Trochilus fulgens Swainson, Philosophical Magazine, 1827, 441. 



Eugenes falgens Gould, Monograph of the Trochilidae, Part XII, 1856, PI. 7, and Vol. II, 

 1861, PI. 59. 



(B — 274 Us, R 334, C 408, U 426.) 



Geogkaphical RANGE: Mountains of southeastern Arizona, southwestern New 

 Mexico, and over the table-lands of Mexico ; south to Nicaragua, Central America. 



The Rivoli Hummingbird, also known as "Refulgent Hummingbird," one 

 of the largest as well as one of the handsomest members of this family found 

 within the limits of the United States, is a moderately common summer resi- 

 dent in suitable localities, but has as yet been obtained onl}^ in the mountains 

 near the Mexican border, in southeastern Ai-izona, and in the extreme south- 

 western corner of New Mexico, in the San Luis range. It was first added to 

 our fauna by Mr. H. W. Henshaw, who took a single specimen in the vicinity of 

 Camp Grant, Arizona, on September 24, 1873; he also met with others in the 

 following year. Since then it has been ascertained to be a summer resident 

 throughout all the higher pine-clad mountains in southeastern Arizona. Mr. F. 

 Stephens met with it in the Santa Rita and Santa Catalina mountains. Dr. A. K. 

 Fisher, Messrs. F. H. Fowler, W. W. Price, and others took specimens in the 

 Chiricahua and Huachuca ranges, while Dr. Edgar A. Mearns obtained it in the 



• The Nidiologiat, Vol. II, Sept. 1894, pp. 7, 8. 



