in the Collection of the British Museum. 327 
Hab. Fernando Po (Thompson, B.M.; Mr. Waterhouse, 
‘type; Burton, B.M.; Du Chaillu, B.M.). Niger Expedition 
(Fraser, B.M.) 
Sciurus mutabilis, Peters, Saugeth. 131, t.31, 32. f. 2, Mossam- 
bique, is probably a variety of S. Stangerz, with white tip to the 
tail. 
The species is known from M. Wilsonzt, which is also nakedish 
beneath, by the size of the cutting-teeth. 
2. Macroxus shirensis. 
__ Fur whitish grey, closely punctulated with black ; hairs of the 
back dull grey at the base, with a broad black subterminal band 
and an opaque-white tip; tail elongate, black, white-ringed, and 
with a black tip; hairs of the tail black, with four white rings 
and a grey tip. 
Hab. Kast Africa, River Shire (Dr. Livingstone). 
Smaller and paler than S. Stangeri, the fur shorter and closer ; 
the cutting-teeth in one specimen are as wide as those of VM. 
Stangeri, and in the other rather narrower. 
These squirrels vary in the width of the under cutting-teeth ; 
in general they are nearly as wide in front as the upper ones, 
but in some specimens they are more compressed and narrower. 
b. Body with a white marginal streak on each side ; sides of neck 
white. 
3. Macrozxus caniceps. 
Sciurus caniceps, Temm. Esq. 127 (summer), 1853. 
Se. Nordhoffii, Du Chaillu, Boston Journal, 1860, vii. p. 363. 
Dark olive-grey, black-and-yellow-dotted ; crown and temples 
black, minutely white-dotted: tail darker, with narrow white 
rings; hairs very long, yellow-and-black-ringed, with a grey tip: 
feet reddish ; sides of neck, throat, and underside of body white, 
very sparsely hairy, except on the throat and near the dark part 
of the back. 
Hab. West coast of Africa (Verreaux): B.M. Ashantee: 
B.M. 
The red spot on the back of the ear is not always visible ; it 
depends on the position of the hair. This species is at once 
known from S. Stangeri by the darker colour, more minute 
punctulation of the fur, the white sides of the neck, and streak 
along the sides of the body. 
Mr. Nordhoff is the reputed writer of M. du Chaillu’s first 
book of travels. 
