342 . suiD^. 



the top of the nose ; it is thin on each edge, and thickened near the 

 outer hinder edge by a strong angular keel. 



2. A skull (1364 a) that was purchased of Mr. Argent in 1851 

 as coming from South Africa. It has the process of the sheath of 

 the canines nearly as long as the preceding (1364 6) ; but it is not 

 so broad from side to side, and the outer surface is evenly rounded, 

 without any keel. This skull verj- nearly resembles the one figured 

 by De Blainville as that of Sus larvatxis (Osteograph. t. 5), and the 

 skuU figured by M. "E. Cuvier (Mem. Mus.). 



3. A skull from the Museum of Dr. de Jeude, probably from the 

 Cape of Good Hope (1364 c). 



The front of the lower jaw behind the canine is more dilated and 

 swollen in P. larvatxis (1364 6) than in the lower jaws of the two 

 other skuUs ; but they aU differ from each other more or less in this 

 respect. 



4. A skull without its lower jaw (715 a) was brought home by 

 Captain Alexander from his Expedition to Damara, and presented 

 to the British Museum. It is recorded in Mr. Gerrard's catalogue 

 of the bones in the British Museum as Sus capensis (p. 277). It 

 is the skull of an adult animal, with the crown of the grinders much, 

 worn. It is probably the skull of a female, as it agrees with all the 

 characters of Potomochoerus, but it has only a well-marked ridge 

 across the upper part of the base of the sheath of the upper canine, 

 and the upper margin of the nose is not dilated or swollen. 



2. Potamochoerus porcus. (Red River-Hog.) B.M. 



Ears densely hairy ; edges of ears and pencU white. Fur red- 

 brown, beneath greyish white. Head and ears black ; whiskers on 

 the cheek, streak over and below the eyes, and dorsal mane white. 



Skidl.- — Male, the prominence of the canine flat-topped and not 

 raised above the surface of the nose ; the lateral process of the 

 sheath of the upper canine narrow at the base, dilated above, short, 

 not reaching to the level of the upper surface of the nose. Fe- 

 male with only a ridge across the base of the sheath of the upper 

 canine. 



Porcus guineensis, Marcgr. Bras. p. 230, fig. (good). 



"Cochon de guin^e, Buffon, H. N. v. p. 146." 



Guinea Pig, Brown, Jam. p. 487. 



Sus porcus, Linn. S. N. p. 1032. 



Pore de guin^e, Besm. Mamm. p. 391 ; Enc. MUh. t. 39. f. 1 (from 



Marcg.). '^ 



Sus scrofa, var. porcus/ .KscAe^, Syn. p. 423. 

 Sus guineensis, Brisson, B. A^y. 109. 

 Sus africanus. Smith; Ch-iffithj A, £. (not Desm.). 

 Sus penicillatus, Schinz, Monogr. d. Sfiugeth. t. 10 ; Bev. Zool. 1848, 



p. 162 ; Gray, P. Z. S. 1862, p. 132. 

 Ohoiropotamus pictus, Orag, Ann. Sr Mag. 2V. IT. x. pp. 280, 281, 

 Painted Pig of the Camaroons, Illustr. London News, fig., 1852. 

 Sus pictus, Wagner^ Schreh. Sdugeth. 8upp. v. pp. 302, 800. 

 Potamochoerus albifrona, Ihi Ckaillu,Proc. Boston N. H. S. vii. p 301, 



1861 ; Travels, p. 422, t. 62.; Gray, P. Z. 8. 1861, p. 277. 



