On neio African Mammals. 83 



there is any relationship between this species and the others 

 it would naturally be with C. brazzai from the Congo rather 

 than with C. neglectus from the White Nile. 



I take this opportunity to call attention to an error in my 

 paper describing numerous monkeys, lately published in this 

 Journal (Sept. 1909, p. 261), arising from copying from the 

 original MS., where Cercopithecus grayi pallidus is printed 

 Cercopithecus pogonias pallidus. The name should be changed 

 to C. gr ay i pallidus. The context in the article clearly shows 

 that the race is more closely allied to G. grayi than to 

 C. pogonias, as all the comparisons are made with the former 

 species and not with the latter. 



IX. — New Af/ican Mammals. By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



Petrodromus tordayi, sp. n. 



A very dark-coloured species of the P. tetradactylus group. 



Size about as in P. venustus. Fur very soft, more woolly 

 than in other species; hairs of back about 13 mm. in length. 

 General colour above conspicuously darker than in any of the 

 allied species, near broccoli-brown when looked at from be- 

 hind, Prout's brown or almost seal-brown when seen from 

 above or in front. The usual line of grey on each side of 

 the median dorsal area almost suppressed. Flanks ochra- 

 ceous buff, dulling to clay-colour anteriorly on the cheeks. 

 Under surface cream-buff, the bases of the hairs slaty. Face 

 like back ; a well-defined median black line along the top of 

 the muzzle. Face-markings all much darker than usual. 

 Light eye-rings very narrow, a dull huffy patch above the 

 posterior half of the eye. Usual dark line from back of eye 

 below ear darkened nearly to black and c mtinued as a 

 marbled slaty-black patch behind the level of the ear; above, 

 at the base of the ear, there is a blackish ring on each side 

 separating the colour of the crown from the usual light basal 

 ring so conspicuous in other species ; this, however, is only 

 buffy, not white, and is therefore much less conspicuous than 

 usual. Hands and feet dull buffy, the inner side of the 

 forearms, and all round the thighs, naked. Tail very thinly 

 haired, practically naked, the black skin quite unhidden by 

 the hairs. 



6* 



