328 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
about in the hotter parts of the day. The specimens trapped were all 
taken in early morning or before evening. Hawks catch many of 
them. 
Sundevall’s description was drawn from specimens collected on the 
White Nile by Hedenborg, and appears to apply well to the series 
from Sennar. The body measurements of adults are larger than he 
gives, however, for the average of three adults is:—head and body 
163 mm., tail 149, foot 35, ear 19. Apparently A. abyssinicus does 
not occur west of the Abyssinian border. At all events, persistent 
trapping failed to discover it; nor did Lord Lovat’s expedition across 
Abyssinia find it farther west than Sellen and Goodur in the high 
country at the head of the Blue Nile. 
ACOMYS CINERACEUS Heuglin and Fitzinger. 
Gray-footed Spiny Mouse. 
Acomys cineraceus Heugl. and Fitzinger, Sitzb. Kén. akad. wiss. Wien, math.- 
nat. cl., 1867, 54, pt. 1, p. 573. 
Two species of spiny mice were collected by the expedition. The 
one is a broad-footed, shorter-tailed animal, inhabiting all the low 
flat country of the Blue Nile Valley; the other is a slender-footed, 
longer-tailed species which we found only at Fazogli in the rocky hills 
which begin here at the Abyssinian border. The former I have referred 
to Heuglin’s A. cineraceus; Heuglin’s type locality is Doka, in eastern 
Sennar, between the Atbara and the Rahad Rivers. The original 
description is brief and refers to a figure previously published by 
Heuglin. In his “Reise” (1877), however, he gives a more detailed 
account, with measurements, which agree in all essentials with those of 
an immature specimen taken at Adreiba, a day’s march above Roseires 
on the Blue Nile. We were fortunate in obtaining a second adult speci- 
men, much farther down the river at El Mesharat. Apparently it isa 
widely distributed species but was difficult to obtain in the dry and 
barren plains over which we journeyed. ‘There can be no doubt that 
Heuglin’s type was an immature animal, having the entire dorsal 
area a smoky gray, paling slightly at the sides. The feet he states _ 
are marked with the same color on their outer portion. ‘The measure- 
ments given are:—head and body 3” 3’” (= 82.5 mm.), tail 2” 6” 
(= 69 mm.), ear 6’” (= 12.6 mm.). Our immature specimen meas- 
ures:— head and body 78 mm., tail 67. The ratio of tail to head and 
