44 BANGS— NEW SQUIRREL FROM PANAMA EN ee 
Color and pelage— Coat short and rather stiff, with very little under fur. 
Upper parts, including upper surface of legs, mixed dull yellowish ferruginous 
and blackish brown, darkest along middle of back, where there is an irregular 
darker dorsal stripe, which becomes blackish at base of tail; upper surface 
of arms more strongly ferruginous. Most of the hairs, above, are ringed — 
blackish at base, then ferruginous, and blackish again at tip, the difference in 
tone of the different parts being due to the width of the ferruginous ring on 
the hairs. Cheeks, lips and chin dull tawny olive; rest of under parts, includ- 
ing under surface of legs and arms, clear, bright ferruginous. Tail, above, 
blackish at base and at end, and bright ferruginous in the middle; below, 
hairs ringed with tawny olive and blackish all along to the black tip, the red 
of the middle of the upper surface showing as an outer fringe of intense fer- 
ruginous. Ears dusky, nearly naked. 
Cranial characters.— Skull of about the size of that of Scturus variabilis 
variabilis from Santa Marta, Colombia, and essentially similar to it, differing 
only in being a little wider and heavier throughout, with the interorbital region 
slightly flatter, less rounded. 
MEASUREMENTS (in millimeters). 
Total Tail Hind 
No. Sex and age length vertebra foot Ear 
8422 Topotype g, old ad. 490 235 55 21 
8421 ce Q, old ad. 460 215 55 20 
8418 z. &, old ad. 435 200 55 25 
8420 Type Q, adult 450 25 56 24 
8419 Topotype Q, young ad. 410 180 55 23 
8423 s &, young 400 170 50 22 
(Note.— Hind foot measured w7th claw; ear measured from notch.) 
Skull, type, 2 adult: basal length, 46.2; occipitonasal length, 55.2; zygo- 
matic width, 34.; mastoid width, 23.6; interorbital width, 17.8; width behind 
postorbital processes, 20.2; length of nasals, 17.; length of palate to palatal 
notch, 25.; length of upper tooth row, 9.4; length of mandible, 32.2; length 
of lower tooth row, 10. mm. 
Remarks.— The six examples of Sciurus variabilis morulus vary 
very little in color, even the young one, no. 8423, being like the 
others. None of the names given to members of the variabzlis 
series seem to apply to this form, though probably Scurus gerrardi 
is its nearest relation. It differs from the Panama animal in 
having pure white under parts and in being not so dark above, 
but has a similarly colored tail—black at base and at end, and 
red in the middle. 
