744 General Notes. 
LocaL VARIATIONS IN THE COLORS OF A FEW NEBRASKA 
FLYING SQUIRRELS.—Coues and Allen, pp. 656-661, Monographs 
of North America Rodentia, published in 1877, being Vol. XI. 
of Hayden’s Report of the United States Geological Survey of the 
Territories, state that: 
“The American Flying Squirrel, (Sciuropterus volucella), presents 
a range of geographical variation in size quite unparalleled in other 
members of the Sciuride, and only equaled in some species of the 
Canide, and possibly in Cervus virginianus. On the other hand 
the coloration is remarkably constant, almost exceptionally 80. 
* * Specimens from the same locality sometimes differ in the 
color of the dorsal surface as much as do the most diverse examples 
from widely separated localities.” : 
e local variations in color are well illustrated by five specimens 
before the writer, viz:— 
hot | eee 
No.| When collected.) Collector. [Lengthof} Length! | Age. 
body 
1 |Oct. 26, '85 Miss S. Thom 7.25 5.35 peme 
2 |Winter (?),?’87 |W.B. Harmon| 7.00 5.00 re (2) 
3 |Nov. 10, ’85 E. E. Good 6.05 5.00 * Š 
4 [Nov., ’85 J.W.Crabtree 5.20 4.25 aaa 
5 | Winter (?),’87 |W.B. Harmon} 7.00 5.00 
n numbers one and four the dorsal surface was a dusky brown 
vous. The color of the furred membrane of numbers one, wes 
three and four is of a decidedly blackish cast, deepening pon i 
edges ; each specimen being of about the same shade. In pge 
ventral surface is whitewashed with yellow or fulvous, there i 
but a slight shade in the washings. Pelage on the ventral surfa 
white to the base. 
of t 
numbers one and four the dorsal surface of the body possessed pe 
black than the upper surface of the tail, while number hee 
proximated number two. The upper surface of the tail of nu japi 
two was perceptibly blacker near the distal end. Excepting bi 
slight shades of yellow the under surfaces of the tails 0 dee 
one, two, three and four, were alike; being of a slightly, h. the 
light yellow. Immediately beneath and longitudinally wit ‘aint 
vertebrae of the tails of the four specimens mentioned, was ; pw 
white line. In all the lower surface of the tail is darker ae s g 
fulvous than the lower surface of the body ; also lighter and ™ 
