Small Mammals from Sankuru, South Congo. — 235 
6. Anomalurus jacksoni perustus, subsp. n. 
9. 35. R. Lubefu, 75 miles north of Lusambo. Alt. 
900 m. 12th February, 1915: B.M. no. 16. 5. 15. 9. 
Type. 
“‘ Native names ‘ Luchiyu’ or ‘ Lukuyi’ (Bakuba dialect). 
Well known to natives everywhere.”’—H. W. 
Similar to true jackson? in all essential characters, but the 
body-colour, instead of being clear grey, much more brownish 
olivaceous. Median area of face little lighter than rest of 
EPper surface, while in jackson it is a whiter greyish. 
imensions of type (as given by collector) :— 
Head and body 300 mm.; tail 250; hind foot 52; 
ear 33, 
Skull : condylo-incisive length 53 ; zygomatic breadth 87 ; 
upper cheek-tooth series 12. 
An imperfect skin of this animal from Batempas, Sankuru, 
was presented to the Museum by Mr. E. Torday in 1909, 
and a second, obtained further east at Baraka, on the west 
coast of Tanganyika, by Capt. Pauwels, was given by the 
Tervueren Museum in 1912. Now that this third specimen 
again shows the same more brownish-olivaceous colour as 
compared with the dozen examples we have of true jacksoni 
from Uganda and the Upper Welle, I think it advisable to 
give the more southern form a special subspecific name. 
Further south still, in Katanga, occurs the quite distinct 
A. neavet, Dollm. 
7. Anomalurus beecrofti, Fraser. 
Immature ¢. 34. Tchimbangu, 60 miles west of Inkongo. 
“This is the less-known of the two species of flying 
squirrel recognized by the natives.”—H. W, 
Like other immature specimens of A. beecroft7, this speci- 
men is very greyish, with grey rump and parachute. 
On laying out the specimens of beecrofti, however, I 
find that while all the specimens from the west of the Niger 
are more greyish, representing laniger, Temm., of Liberia 
and the Gold Coast, and argenteus, Schwann, of Southern 
Nigeria, those from §. Cameroons, Spanish Guinea, and 
Gaboon average much deeper in tone, and these have been 
taken for the typical beecroftd. 
But the type of beecrofti, said to be from Fernando Po, and 
other specimens closely agreeing with it, from about 7000- 
8000’ on the Cameroon mountains, together represent yet 
another race, characterized by its much longer fur and deeper 
greenish coloration. JI therefore propose to describe the 
more southern form as follows :— 
