592 DR. J. E. GRAY ON THE BUSH-BUCKS. [June 20, 



4. Grimmia campbelli^e. (The Sierra-Leone Duyker.) 



Cephalophus burchelli, young {A. campbellice, Gray, MS.), Gray, 

 Cat. Mamm. 1840, p. 162. 



Cephalophus campbellice, Gray, Cat. Ungul. B. M. p. 80. 



Fur grey-and-black grizzled, paler beneath ; nose and forehead 

 with an indistinct black streak. 



Hab. Sierra Leone. 



Only known from a young specimen. It appears very distinct 

 from any of the preceding. 



** Head elongate; skull elongate ; suborbital 'pit very wide, shal- 

 low ; nasal hole large, swelling out on the sides ; horns shelv- 

 ing backwards. 



5. Grimmia burchellii. 



Cephalophus burchellii, Gray, Cat. Ungul. B. M. p. 8 1 ; P. Z. S. 



1857, t. 57- f. 2; Bocage, Joru. de Sciencias, Lisboa, I860, p. 222. 



Cephalophus grimmia (mergens), Knowsley Menag. t. 1, 2. f. 1 &2. 



Fur reddish brown ; underside rather paler. Young dark reddish 

 brown. 



Hab. South Africa : Angola {Bocage). 



There are four specimens in the British Museum ; one, a male, 

 has longer hair than the rest, and is probably of the winter season. 

 It has frequently bred in the Society's Gardens. 



One of the skulls in the Museum is the specimen described in 

 Burchell's ' Travels ' (vol. ii. p. 327), and which H. Smith named 

 A. burchellii. 



2. Terpone. 



Horns conical, strong, recurved nearly on the plane of the fore- 

 head. Ears ■ ? Skull elongate ; nose compressed, elongate ; 



nasal bones oblong, scarcely broader behind ; forehead flattish, on 

 the same plane as the nose, not swollen (P. Z. S. 1865, p. 205, 

 skull). 



Terpone longiceps. 



Cephalophus longiceps, Gray, P. Z. S. 1865, p. 204, (f. of skull) 

 p. 205. 



Cephalophus ruficrista, Bocage, Mus. Lisbon, MS. 



Hab. Gaboon (skull, B.M.) ; Angola (Mus. Lisbon). 



Only known from a skull received, without a name, from M. du 

 Chaillu. 



The animal belonging to this skull has not been observed ; and it 

 is remarkable that a skull similar to it has been described by two 

 others. 



M. Barboza du Bocage, in the ' Jornal de Sciencias Mathematicas, 

 Physicas e Naturaes, Lisboa,' Aug. 1869, p. 221, describes the head, 

 covered with skin, of a specimen of Cephalophus, which he received 

 from the interior of Angola, the skull of which is exactly like that 



