LS 0 re. 
27. — Epimys schoutedeni sp. n. 
G 412, 434, 436. Mambaka. 
À bright orange-rufous coloured mouse related to Æpimys aeta 
THos, distinguished by its more rufous colouring, much larger size 
and heavier skull. 
Body dimensions considerably greater than in aeta; tail rather 
short compared with that of the Cameroon species. 
General colour of dorsal surface bright orange-rufous slightly 
darker on the back than on the flanks. Hairs of back with slate- 
grey bases, orange-coloured subterminal rings and brownish tips; 
on the flanks the tips of the haïirs are in most cases vellowish buff. 
Backs of hands and feet dirty white. Entire ventral surface white; 
hairs of belly slate-grey with long white tips. The light-coloured 
belly is sharply marked off from the buff-tinted flanks. Tail thinly 
clad with short brown hairs. 
Skull built on the same lines as that of aeta, but larger and 
heavier throughout. 
Dimensions of no. 434, which may be considered as typical of 
this new species. 
Skin (measured in the flesh). 
Head and body 110 mm.; tail 125; hind-foot 20; ear 17. 
Skull : Greatest length 29 mm.; condylo-incisive length 27; 
zygomatic breadth 14.1; interorbital constriction 47; breadth of 
brain case 11.5; length of nasals 10.3; palatilar length 12.8; length 
of palatal foramina 6; alveolar length of upper molar series 4.5. 
The two specimens of this interesting novelty submitted to me 
are identical both in colour and size. ÆEpimys stella THos., describ- 
ed from the Ituri Forest, is evidently not so nearly related to this 
new form as is the Cameroon species. Æ. ste/la, though similar in 
general colouring, possesses a very much narrower and slighter 
skull than either aefa or the Mambaka species; in addition the tail 
is of exceptional length, being nearly twice as long as the head and 
body. The larger size, more rufous colouring and heavier skull are 
the chief characters that distinguish Dr. CHrisrv's mouse from 
aela. 
