SCIURUS. 113 
with black border and subapical bar and white edging; hands white 
or whitish; feet grizzled gray. 
Total length, 
70. Skull: average of fiv 
co 
ail vertebre, 247; hind foot, 
3 : 
50.1; palatal leneth, 27.2 
7-3: 
interorbital width, ic width, 35.1; length of upper 
molar series, 11.2 
G. Echinosciurns. 
Premolars, —. Skull: br 
a Kull: Droad, aepressed Detween orbits; superior 
outline curved, sharpest decline posteriorly; occipital region widest; 
interorbital constriction very slight; rost road and short: outer 
side of nasals reaching ends of premaxille; the nasals shorter than 
oe a : more. +t - ae eee ee ers jan Be 
width between orbits: basioccipital ( sisphenoid broad, widely 
° I< | 1 11 % 
separating audital bulla 
Fic. 19. SciurRus (ECHINOSCIURUS 
AUREIGASTER. 
No. 4744 Field Columbian Mus. ( . Nat 
