ORNITHOLOGICAL CLUB, 
57 
miiig-Bird is found almost simultaneously over all the more inviting 
parts of this lower country, and in certain sections where flowers 
abound, as in the mountains of Eastern Arizona, their numbers far 
exceed all other species put together. 
Though apparently so hardy, and though pushing its migrations 
in spring in search of its summer home to a point attained by no 
other species of its family, it yet in wunter retires far south, and 
appears to find the climate, even of California, too rigorous for its 
endurance. Possibly, however, the winter flora is not suited to its 
habits, and this may govern its choice of a winter residence, rather 
than inability to live in a climate which appears well adapted to 
its less fastidious rival, the Anna Humming-Bird {Galypte anncB). 
However this may be, it is certain that the great proportion, 
perhaps all, of the two species of Selasphorus leave our terri- 
tory entirely in fall, and if any remain they are but a very limited 
number, which take refuge in the warm interior valleys of Cali- 
fornia. 
Below is appended a table of measurements of the two species. 
The specimens of S. rufa are purposely selected from different 
localities, and the measurements give a good idea of the amount of 
variation : — • 
Sex. 
Date. 
Locality. 
Collector. 
Wing. 
Tail. 
BiU. 
S. rufus, cf ad. 
March 29, 1877 
Nicasio, Cal. 
C. A. Alien 
1.59 
1.23 
.61 
“ cf ad. 
March 29, 1877 
“ “ 
4 4 4 4 
1.62 
1.33 
.63 
“ cf ad. 
— — 1876 
SanFrancisco,Cal. 
F. Gruber 
1.67 
1.28 
.65 
“ cf ad. 
— — 1876 
“ “ “ 
“ 
1.60 
127 
.65 
“ cf ad. 
May 29, 1866 
Columbia Diver, 
J. K. Townsend 
1.62 
1.33 
.63 
“ cf ad. 
— — 1865 
Mirador, E. Mex. 
Dr. Sartorius 
1.62 
1.27 
.66 
“ cf ad. 
April 21, 1861 
Steilacoom, W. T. 
Dr. Suckley 
1.67 
1.27 
.63 
“ cf ad. 
August 25, 1873 
Apache, Ariz. 
H. W. Henshaw 
1.58 
1.32 
.63 
“ ? ad. 
July 24, 1873 
El More, N. Mex. 
44 44 
1.75 
1.22 
.72 
“ 2 ad. 
August 12, 1874 
Ft.Garland, Col. 
C. E. Aiken 
1.77 
1.26 
.68 
“ $ ad. 
August 17, 1875 
Tejon Mts., Cal. 
44 (4 44 
H. W. Henshaw 
1.66 
1.17 
.63 
“ $ juv. 
August 18, 1875 
1.73 
1.21 
.67 
S. alleni , cf ad. 
March 24, 1875 
Nicasio, Cal. 
C. A. Allen 
1.47 
1.21 
.64 
“ cf ad. 
March 31, 1877 
U U 
(I 
1.48 
1.17 
.63 
“ cf ad. 
March 31, 1877^ 
(( 
it 
1.50 
1.17 
.67 
“ cf ad. 
March 31, 1877 
SanFranciscOjCal. 
u a 
1.52 
1.17 
.63 
“ Q ad. 
May 18, 1876 
Nicasio, Cal. 
it it 
1.63 
1.15 
.68 
“ 2 ad. 
March 17, 1877 
44 44 
it it 
1.61 
1.16 
.67 
S. rufus. Average of eight males ...... 
1.58 
1.29 
.64 
“ 
“ “ four females 
1.72 
1.21 
.68 
S. alleni, 
“ “ four males 

1.49 
1.18 
,64 
<4 * 
“ “ two females 

1.62 
1.15 
.67 
The number given of S. alleni is less than would have been de- 
sirable, and I regret that I have not at hand the large number of 
