14 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
however, to the interpretation of these variations. Allen (1899, 
p. 213) described these mainly in terms of a “‘winter or breeding pelage”’ 
and a “summer or postbreeding pelage,’”’ yet the specimens upon 
which these descriptions could be based clearly include all the 36 
specimens taken during July (op. cit., p. 214). Ten topotypes that - 
Allen originally described as being in the ‘‘annulated olivaceous phase”’ 
and possibly corresponding to the ‘“‘summer or post-breeding pelage’’ 
were taken on the following dates: January 5, February 5, March 25, 
March 27, June 22, July 3, 13, 19, 20, and one without date. These 
specimens are now in the collection of the United States National 
Museum; they represent a fairly uniformly colored series. They 
are redescribed as follows: 
Back capucine yellow or xanthine orange to orange-rufous more 
or less ticked with black. In some specimens the hairs of the whole 
dorsum are tipped or annulated with black (pale agouti, pattern 3a), 
in others only the hairs of the posterior half of the back are conspicu- 
ously tipped and annulated with black (pattern 4a) and still others 
with the grizzled rump and median dorsal band contrasting with the 
clearer orange of the shoulders (pattern 4ac). Except for the white 
ventral portions, forelegs nearly uniformly orange to xanthine orange, 
the hind legs like rump or nearly uniformly orange. Sides of body 
like back but with an orange lateral line sharply defining the white 
underparts. Upper surface of tail xanthine to mars orange, beneath 
faintly bicolor to distinctly so, or weakly tricolor with black forming 
the middle band. 
Remarks.—Additional specimens examined, taken at Bonda, 
Minca, Mamotoco, and Cincinnati during January, June, July, and 
August, agree with the above description except for two adults and 
one immature collected by Carriker at Cincinnati and Minca, respec- 
tively, which agree with saltwensis in color. Allen (1904, p. 431) 
quoted H. H. Smith, who collected the type series as well as speci- 
mens identified as saltuensis, as follows: 
“Common, ranging from sea-level to 6,000 feet or higher. As shown by Dr: 
Allen (this Bulletin, XII, 1899, pp. 214-216) the color of the upper parts varies 
from red, more or less bright, to dark olivaceous; he considers the former a breed- 
ing and the latter a summer or postbreeding pelage. My strong impression 
however, is that the depth of coloring is connected in some way with the habitat. 
We observed that specimens shot near sea level (Sciurus saltuensis bondae) were 
generally red, no matter in what month they were found; while those from the 
mountains (Sciurus saltuensis) were commonly dark at all seasons; the rule, 
however, is not invariable, as we have some dark ones from near the coast and a 
few bright red ones from the higher mountains. At Minca (2,000 feet) the two 
varieties were about equally common in May. It may be well to note that our 
first collections were from Bonda, and nearly all the squirrels were red; as dark 
ones were brought in we noted the difference and always saved such specimens if 
we could, while often rejecting the red ones. Consequently, the collection does 
not give a correct idea of their relative abundance.—H. H. 8.” 
