196 Mr. 0. Thomas on 



size from the smallest upwards as follows : dybowskii, 

 ansorgei, obscurus, and alexandri, the respective basal lengths 

 of their skulls being 52, 58, 68, and 74 mm. 



Funisciurus auriculatus boydi, subsp. n. 



A darkened iC saturate " form of F. auriculatus. 



Colour darker throughout than in true auriculatus. 

 Nape, and anterior back blackish, finely lined with pale 

 buffy, much darker than the clear greyish of auriculatus. 

 Posterior back more approaching hazel. Lateral line less 

 conspicuous, its spots smaller, less sharply defined, buffy 

 instead of whitish. Under surface ochraceous-buff. Hands 

 and feet brown, lined with tawny, about as in auricidatus, 

 not greyish as in the next form. Tail with the median 

 part of its terminal portion below dark tawny, not so bright 

 as in beatus. 



Dimensions of the type (measured in the flesh) : — 



Head and body 225 mm. ; tail 180 ; hind foot 47 ; 

 ear 20. 



Hab. Kameruns. Type from Mussaka, on the lower 

 Mongo R., just east of Kamerun Mountain. 



Type. Adult male. Original number 20. Collected 

 13th April, 1909, by Capt. Boyd Alexander. 



By the kindness of the authorities of the Berlin Museum, 

 the British Museum has been allowed to acquire by ex- 

 change an example from Barombi representing the true 

 F. auriculatus, and the form now described may be readily 

 distinguished from that animal by its much darker colour 

 throughout, and especially its darker nape and shoulders. 



In Prof. Matschie's original description it might appear 

 that the type locality of auriculatus was Kribi, but he has 

 kindly informed me that this is due to an accidental mis- 

 placement of the description, and that the three skins on 

 which it was founded were from Barombi — as, indeed, would 

 appear by the introduction to the paper. The specimen 

 received from Berlin is therefore a metatype. 



Funisciurus auricidatus beatus, subsp. n. 



Colour throughout as in true auriculatus , but the feet, 

 both fore and hind, dark grizzled grey, without suffusion of 

 brown or tawny. Underside of terminal half of tail very 

 bright ochraceous-buff, much paler and brighter than in 

 auriculatus or boydi. 



Dimensions of the type (measured in flesh) : — 



Head and body 230 mm.; tail 160; hind foot 45 ; ear 17. 



