BANGS: CHIRIQUI MAMMALIA. 23 
Color and Pelage. — Pelage, short and rather hispid, with scarcely any under- 
fur. Upper parts, finely mixed (owing to the annulations of the hairs) blackish 
brown (perhaps nearest mummy brown) and tawny, the tawny color predom- 
inating on sides, the dark brown color along middle of back; orbital ring, 
back of ear and a small spot just behind ear clear tawny; under parts tawny, 
becoming yellower, about raw sienna on under side of neck and head, and often 
the breast similarly colored ; tail much the same as back, but with the tawny 
annulations wider; deeply fringed along sides with clear tawny, under side 
darker than upper. 
Variations in Color. — The large series before me presents very little color 
variation, and apparently no seasonal variation in color; a few specimens only 
in very worn pelage are duller, more rusty brown above, due to actual fading; 
the amount of the yellowish color (raw sienna to ochraceous) that always 
occupies the under side of head and neck varies in different individuals — in 
two extreme specimens, Nos. 10,416, and 10,038, 9 and g adults, it covers 
the whole under parts, there being no tawny. ‘There are also three albinistic 
specimens, irregularly marked with white on under parts and feet. 
Skins from the Volcan de Chiriqui from upwards of 4,000 feet altitude are 
more woolly with decidedly more under fur than lowland examples, but other- 
wise they do not differ. 
Measurements (ten adults type and topotypes)— 
No. Sex. Total length. Tail vert. Hind foot. Ear. 
10,044 type & 400. 190 52 20 
10,038 topotype ob 460 190 55 18 
10,042 do. Pe 460 220 55 24 
10,040 do. a 440 185 53 20 
10,047 do. a 440 185 54 22 
10,041 do. ae 425 190 57 23 
10,036 do. ? 410 180 55 23 
10,045 do. Q 410 180 54 23 
10,043 do. a 410 180 56 24 
10,039 do. af 395 185 54 24 
Skull, type, adult g, basal length, 46.2; occipitonasal length, 54; zygo- 
matic width, 31.4; length of nasals, 16.4; length of palate, to palatal notch, 
23.2; to end of pterygoid, 30. 
Remarks. — This new form which is found apparently throughout Chiriqui, 
in suitable places, is a slightly differentiated southern race of S. hoffmanni of 
Costa Rica. It is distinguished by paler under parts, which are much yellower, 
less brick-red, and by the different shade of the upper parts. I do not believe 
that S. hoffmanni is a subspecies of S. e@stuans of South America, but as this 
has been the view taken by recent reviewers of the group, for the sake of uni- 
formity I so treat it here. 
