On Small Mammals from the Upper Nile. 2S 
Dimensions of the type (taken on the remade skin) :— 
Head and body 435 millim.; hind foot, s. u. 90, c. u. 101. 
Skull: greatest length 96°5; basilar length 70°5; zygo- 
matic breadth 46; nasals, greatest length 36, greatest breadth 
18:7; interorbital breadth 27:5; diastema 22; diagonal 
length of bulla 15; length of upper tooth series 17-4. 
Hab. Ruatan Island, Bay of Honduras. 
Type. Adult female. B.M. no. 86. 10. 8. 7. Presented 
by Messrs. F. D. Godman and O. Salvin. Collected by 
G. F. Gaumer. Three specimens examined. 
This is evidently a pauperized insular representative of the 
continental DV. punctata, Gray. In colour it is rather richer 
than the type, more strongly fulvous anteriorly and yellow 
posteriorly ; but this is possibly merely due to the age and 
probable fading of Gray’s type specimen. 
XXXVIII.—On a Collection of Small Mammals from the 
Upper Nile obtained by Mr. R. M. Hawker. By OLDFIELD 
‘Tuomas, F.R.S. 
Mr. R. MacDonatp HAWKER, to whom the National 
Museum already owes many valuable mammals collected by 
him during his various expeditions into northern and _ north- 
eastern Africa, has now presented to the Museum the specimens 
obtained during his last winter’s trip to the Soudan. They 
were mostly obtained on the White Nile between Fashoda 
and Khartoum, and are highly valuable both as supple- 
menting the Museum collection, still very incomplete, from 
the Soudan, and as illustrating the many species described by 
Heuglin from specimens no lonyer-in-existence. ‘The defi- 
nite identification of these species of Heuglin’s is a matter of 
the utmost value. 
The number of species in Mr. Hawker’s collection is not 
very large, but among them there are a new hare and a new 
gerbille; and I have also taken the opportunity to describe a 
new member of the latter group obtained by Lord Delamere 
in Hast Africa. 
1. Cercopithecus sabeus, auctorum, nec Linn. 
S. Renk, 250 miles south of Khartoum. 13th May. 
