ALLEN: MAMMALS FROM THE BLUE NILE VALLEY. b00 
robusta, a tufted-tailed species, was the only member of the genus 
known from this part of the Nile Valley. 
GRAPHIURUS OROBINUS (Wagner). 
Pigmy Dormouse. 
Myoxus orobinus Wagner, Abh. Kon. Baier. akad. wiss., 1843, p. 149. 
There is much doubt as to the identity of Wagner’s M. orobinus, the 
type locality of which is Sennar. The original description is too brief 
to be of much avail, nor does Reuvens in his review of 1890, shed 
- further light on the subject. The length of the body (=head and 
body) is given as 4’’2’” or about 107 mm. We obtained five dormice 
on the Blue Nile, at El Garef and Magangani in traps set at the foot of 
thorn trees in scattered groves with vines and undergrowth. As no 
other species was met with, it may be that these represent orobinus 
though the largest is smaller than Wagner’s measurement indicates. 
They are of the group to which G. parvus belongs, but rather pallid,— 
a brownish gray above, slightly clearer on the shoulders, black eye- 
ring nearly obsolete. tail pale drab; below whitish, with a tinge of 
buff. The gray bases of the hairs show through on the abdomen. 
The tail is not white-fringed. The measurements of two adult fe- 
males (M. C. Z. 14,483, 14,486) are: — head and body 83, 88; tail 75, 
71; hind foot 15, 17; ear from meatus 13.5, 12.5; greatest length of 
| skull 25. It is not unlikely that Wagner’s specimen was one of the 
_ larger browner group of dormice, and that ours is an undescribed race 
| of the smaller group. Dollman’s Graphiurus butleri seems to be a 
| larger species; it was described from Jebel Ahmed Agar, on the White 
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Nile below Fashoda. 
EUXERUS ERYTHROPUS LEUCOUMBRINUS (Riippell). 
| Side-striped Ground Squirrel. 
: Scuirus leucoumbrinus Riippell, Neue wirbelth. fauna Abyssinien. Sdugeth., 
—_: 1835, p. 38. 
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_ We first saw this Squirrel between Sennar and Singa, and it was 
subsequently met with all along the Blue Nile to Fazogli where we 
| obtained a young one, not more than a third grown, in late January. 
Heuglin states that these animals appear in early forenoon and late 
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