1908] Grinnell—Biota of the San Bernardino Mountains. 99 
Several in the process of moult were secured August 28 to Sep- 
tember 3. One specimen still in complete juvenal plumage was 
taken August 31. 
Twenty-three specimens of this species were secured, in both 
worn and fresh fall plumages, as well as juvenals, and these I 
have carefully compared with a large series from many localities, 
loaned me by the United States National Museum. I am unable 
to detect any constant differences, except that the San Bernar- 
dino birds have on an average slightly larger bills. In coloration 
they appear to be exactly like the birds from eastern North 
America. I found Rocky Mountain specimens to be slightly 
paler. All are totally different from M. l. striata of the humid 
coast belt farther north on the Pacific coast. 
Passerella stephensi (Anthony). Stephens Fox Sparrow. 
Stephens fox sparrows were found in families about Dry lake, 
9000 feet altitude, on June 22, 1905. These groups were made 
up of adults and three or four young which were just able to fly. 
Several other similarly constituted families were noted at the 
South Fork cienaga, 8500 feet altitude, June 27. One young fox 
sparrow had evidently just left the nest, as it was unable to fly 
more than a few feet, and was easily caught. These instances go 
to show that the species breeds at least as early as the latter half 
of May. We failed to find a nest, or to gain any clue to the nest- 
location. Judging from the actions of the birds during June, I 
presumed that the nests were located on the ground beneath 
bushy thickets. 
Fox sparrows were found to be more numerous in the vicinity 
of Bluff lake than anywhere else in the San Bernardino moun- 
tains. Here they were often heard in full song and many young 
were seen from July 14 to 27, 1905. They were seen in small 
numbers at Bluff lake as late as September 3, when the full song 
was also heard. Specimens taken August 29 are in complete fall 
plumage. On the north side of Sugarloaf from August 19 to 
21 a few were noted at 8500 feet altitude. But that region was 
too dry, as the species prefers the neighborhood of streams or 
clenagas. 
The Stephens fox sparrow was an inhabitant of the upper 
