[8S5.J Brewster on Some Arizona Birth. 8^ 



1. Turdus ustulatus Natt. Russet-backed Thrush. — In my paper 

 on the collection made by Mr. Stephens in 1SS1 I added* this Thrush to the 

 fauna of Arizona with some hesitation, the single specimen taken having 

 been merely identified in the field, without comparison, and shortly after- 

 wards lost. This record is now satisfactorily corroborated, however, by a 

 second example, unmistakably ustulatus, taken at Camp Lowell. May 21. 

 1884. . ' 



2. Sialia sialis azurea Baird. Mexican Bluebird. — Three Blue- 

 ' birds obtained in the Santa Rita Mountains in June are doubtfully referable 



to this subspecies. One of the two males (No. 1855, F. S.. June 

 18) has the blue above of that greenish shade said to be charac- 

 teristic of azurea, but the other (No. 1S56, F. S.). taken the 

 same day, does not differ in this respect from sialis, the tint of the blue 

 being precisely the same. Both are peculiar in having the under parts 

 (excepting the usual dingy white space on the abdomen, crissum, and 

 tail-coverts) nearly uniform pale brownish-orange, paler and yellower, in 

 fact, than in the female of sialis, and with scarcely a tinge of the usual 

 deep reddish-brown. This characteristic is not mentioned in descriptions 

 of azurea. nor do I find it in any of the dozen 01 more Mexican and Gua, 

 temalan examples before me. The Santa Rita female (No. 1897, F. S.- 

 June 20) is still paler beneath, as well as browner above than the female 

 of sialis. All these specimens differ further from 6". sialis in having rather 

 longer wings and tails, in this respect agreeing with azurea. In the event 

 of their proving distinct from the latter, which seems probable, I propose 

 for them the name fulva. Whether distinct or not, the bird is new to 

 Arizona, no form of Sialia sialis having been previously reported from 

 that Territory. 



Measurements. — $ , No. 1855, F. S. : Length. 6.40; extent. 12.90; wing. 

 4.01; tail. 2. S3; culmen from nostril, .35. $ No. 1S56, F. S. : Length, 

 7.10; extent, 12.50; wing, 4.00; tail, 2.85; culmen, .37. $ No. 1S97, F. 

 S. : Length, 6.60; extent, 11.90: wing, 3.90; tail, 2.73; culmen, .37. 



3. Caeligena clemenciae Lesson. Blue-throated Caziqjje. — An 

 adult male of this fine Hummingbird, which, it is needless to say, is en- 

 tirely new to our fauna, was taken by Mr. Stephens at Camp Lowell, May 

 14, 1SS4. Upon comparing it with three Mexican specimens (exact locali- 

 ties not recorded) in the collection of the Boston Society of Natural His- 

 tory, I find that it differs only in being of a darker, purer green above, 

 and in having the ash-gray of the under parts unmixed with green except 

 on the sides. The birds just mentioned have the upper parts of a bronzed 

 or yellowish green, the feathers of the under parts everywhere (except on 

 the throat) tipped with greenish. Elliot describes! the upper parts as 

 'bronzy-green' but says nothing about any greenish below. 



Measurements. — $ No. 1460, F. S. : Length, 5.40; extent, 7.50: wing, 

 3.10; tail, 1. 91 ; culmen from nostril, .88. 



* Bull. N. O. C, Vol. VII, No. 2, Apr., 1882, p. 68. 

 t Synopsis of the Trochilidre, p. 30. 



