ae PROCEEDINGS OF THE NATIONAL MUSEUM 465 
pronounced spinal stripe; while in No. 19004, which is the largest and 
apparently the oldest of the series, the head is dusky only between the 
eyes and nose, the rest of the head and the back and sides bein g¢ bright 
cinnamon color. 
Dimensions of six skulls. 
— oe —- 
a : ‘ | 34730 | 34729 | 34728 | 34725 | 34726 | 34729 
i Measurements. male. | female.|female.| male. | male. | ¢ jr. 
mm. | mm. | mm. num. | mm. | mm. 
/(Basi-cranial length (Hensel) ......................-- Coe ee eee ee 39.4 39.1 38.0 32.0 
PemeerOM DALALC soem cases encase teens 25. 6 24.8 24.8 24, 2 23.1 19.3 
mpreadth across zygomata ............------------.-. 33.4 31.7 32.4 31.1 30. 0 25.9 
Re NOt NASA Sire sae a= aan cae cle sos 2 ane win ols os 18. 2 16, 4 15.8 17.0 15. 2 13. 2 
Length of upper molars (alveoli) -.................-. 9.1 9.0 9.0 9.2 8.8 8.6 
Length of lower molars (alveoli) -.........-.-..---- 10.6 11.0 10.0 10.6 10.0 9.9 
Distance from end of coronoid process to posterior 
a EY ISIE ese Se See ares 16. 6 1630) |. 222382. 16.4 15.5 13.4 
The face of each of the upper and lower incisors in this species is 
divided in the median line by a thread-like longitudinal ridge. 
49904. Male. Mount Kilima-Njaro, June 3, 1888. 
ral Male. Mount Kilima-Njaro, June 1, 1888. 
Male. Mount Kilima-Njaro, June 1, 1888. 
Female. Mount Kilima-Njaro, June 3, 1888. 
3779%- Female. Mount Kilima-Njaro, June 3, 1888. 
$2991. Male, young. Mount Kilima-Njaro, June 1, 1888. 
19720. Female. Mount Kilima-Njaro, September, 1889, 5,000 feet. 
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Sciurus undulatus, sp. nov. 
Size moderate. Tail longer than the head and body. Feet large. 
Thumb with narrow, convex, pointed nail. 
Posterior third of soles of hind feet hairy; 
otherwise naked. Ears small, rounded; with- 
out tufts. 
— General color rusty gray above; bright rust 
color below and on the feet. Tail with alter- 
nate bars of black and pale rusty yellow, and 
broadly edged with pure white. Color of 
‘Male taken June 12: Fur of the back of two 
kinds, a fine, wavy underfur, and a long fur 
of straighthairs. The underfur has five rings. 
‘The basal ring is black, the next tawny, the 
third black, the fourth tawny, and the fifth or 
terminal ring black. The long fur has usually 
‘Six rings, three narrow pale tawny rings, the 
first of which is at base of the hair, alternat- 
‘Ing with three wide black ones, the last of 
‘which is at the tip of the hair. On the head, is 
sides of the neck, flanks, and upper portion *'Siai natenlooe US Nat 
of the legs the subterminal light ring is much “8: N® #4781 ¢ type. 
‘paler yellow, approaching white, so that these parts are considerably 
lighter in color than the back. 
Proe. N. M. 92 30 
