1908] Grinnell—Biota of the San Bernardino Mountains. 131 
On June 30 there were three young apparently just hatched, 
which makes the incubation period for this species fifteen days 
at most. The bird was a very close sitter and I nearly touched 
her several times in my manipulations to secure photographs. 
At one time three deer flies at once were industriously prospect- 
ing in her nostrils, but she never flinched. Her only movement 
Was an occasional instantaneous wink of the eye. 
A very few hermit thrushes were seen about Bluff lake in 
July, 1905. Full-grown young were taken July 23 and 25. On 
the north side of Sugarloaf, 8000 feet altitude, I took a full- 
grown juvenal August 22, and on the same date I secured two 
other birds-of-the-year in complete first winter plumage. These 
birds were feeding on service-berries which at this place extended 
on an exposed ridge up into the fir belt. 
Twenty-four specimens in all were obtained. The following 
table of measurements shows the San Bernardino mountain 
thrushes to belong to the race sequoiensis deseribed by Belding 
from the central Sierra Nevada of California. They are two or 
three per cent. larger, but in color they are identical. (See Grin- 
nell, Auk XVIII, July, 1901, pp. 258-260.) 
No. Sex Wing Tail 
7920 6 96 fit 
6506 6 95 73 
6508 6) 100 84 
6507 6) 95 78 
6543 6 100 82 
6722 6 100 82 
7654 6 95 77 
7256 6) 100 80 
7945 6 99 82 
7946 6 96 79 
Average of 10 66 97.6 79.4 
7255 2 94 76 
6563 © 93 77 
6577 g 94 77 
7539 9) 93 74 
7530 2 95 81 
6505 @ 92 77 
Average of 6 29 93.5 ie 
