1868. J DR. J. E. GRAY ON THE SUID.E. 35 



C. larvatiis, Gray, Ann. & Mag. N. H. 1852. 



Phacochcerus koiropotamus. Lesson, N. Tab. R. A. 162, 1841. 



Sus koiropotamus, Desinoulins, Diet. Class. H. N. t. 7, 5 . 



Sus choiropotamus, Reichenb. Naturg. d. Pachyd. t. 33. f. 48. 



Potamochcerus larvatus. Gray, Ann. & Mag. N. H. xv. 66 ; Fitz. 

 Sitz. Akad. d. Wissen. 1864, p. 19. 



P. africanus, Gray, P. Z. S. 1852, p. 131, 1858, p. 58, 1860, 

 p. 443; Gerrard, Cat. Bones, B. M. 279; Kirk, P. Z. S. 1864, 

 p. 656. 



Phascochcerus larvatus, Jardine, Nat. Libr. 232, t. 28. 



Sanglier a masque, Sganzin, Mem. Strasb. iii. 1, t. 1. 



Female. Skull with only a ridge across the base of the sheath of 

 the upper canines. 



Sus capensis. Gray; Gerrard, Cat. of Bones B. M. 277 (skull). 



Hab. South Africa, called " Bosch Vark;" Central Africa; Zam- 

 besi delta, called "Njulvi" {Kirk). 



" Scarcely any two specimens of this species exhibit the same 

 colour ; some are brownish black variegated with white, and others 

 are almost entirely of a light reddish brown or rufous tint without 

 the white variations ; indeed such are the varieties that it is scarcely 

 possible to say what are the most prevailing colours." — A. Smith, 

 S. A. Quart. Journ. p. 90. 



1. In the British Museum there is a skeleton (1364 6) of a spe- 

 cimen that lived several years in the Zoological Gardens. In the 

 skull the malar process is very broad, reaching nearly to the level of 

 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 i) ; but it is not 

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

 without any keel. This skull very nearly resembles the one figured 

 by De Blainville as that of Sus larvatus (Oste'ograph. t. 5), and the 

 skull figured by M. F. 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. larvatus (1364 b) than in the lower jaws of the two 

 other skulls ; but they all differ from each other more or less in this 

 respect. i^ 



4. A skull with»»t its lower jaw (715 a), was brought home by /7 

 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 Potamochcerus, but it has only a well-marked ridge 

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

 and the upper margiu of the nose is not dilated nor swollen. 



