Small Mammals from Sankuru, South Congo. 237 
Dimensions of the type (measured in flesh) :— 
Head and body 154 mm.; tail 151; hind foot 41; 
ear 16. 
Skull: condylo-incisive length 35-3 ; zygomatic breadth 22 
upper tootl-row 6°9. 
Hab. (as above). 
Type the female (barely adult). B.M. no. 16. 5. 15, 12. 
Killed 3rd November, 1915. 
This subspecies is readily distinguishable from the other 
three, which were characterized in 1904*, by its yellower 
body-colour, yellowish light dorsal stripes, grey hands and 
feet, the maioncebrown tinge of the rump and hips, and the 
greyish- white colour of the throat and inguinal regions. 
Thanks to the work of the late Dr. W. J. Ansorge, the 
Museum contains good series of the Western Angolan races 
of congicus (Kuhl’s type agreeing absolutely with that of 
N. Angola), and now the present examples from the Sankuru 
add considerably to the known range of the species, and 
form the first specimens we have had coming unquestionably 
from the area of the Congo. 
10. Dendromus peci’ei, M.-Edw. 
g- 0,263.9. 1,9. Inkongo. 
(7) Common on grass-land. (26) Trapped in clearing of 
bush. 
Determination provisicnal, The condition of the specimens 
renders it difficult to be certain if 26 is of the same species 
or even of the same group of the genus as 7; 8 and 9 are 
the young of the latter. 
In try:ng to determine these specimens, I have come to the 
conclusion bat it would be a convenience if the forms with a 
nail on the fifth hind tee were separated subgenerically from 
those with aclaw. The remarkable D. lovati, de Wint., of 
Abyssinia, might also form a special subgenus. 
The following arrangement is suggested :-— 
A single dark line down back, or none. 
Fifth hind toe with a claw .......... Subgenus Dendromys, s. s 
Genotype D. mesomelas, Brants. Other species: D. in- 
signis, Thos., acreus, Wr., pumilio, Wagn., messo- 
rius, Thos., ruddi, Wr., ansorgeit, Thos. & Wr., 
jamesoni, Wr. 
= —— 
* Ann. & Mag. Nat. Hist. (7) xiii. p. 411 (1904). Now, however, that 
I have seen to what extent bands wae streaks may be altered seasonally 
by squirrels, 1 am inclined to think it possible that F. congicus congicus 
and F. c. olivellus represent seasonal pelages of the same race. But 
further dated specimens will be needed before this can be definitely 
proved. 
