34 DR. J. E. GRAY ON THE SUID^. [Jan. 9, 



by B. H. Hodgson, Esq. It is that of an animal developing the last 

 molar. In form the skull is very like that of Sus, but shorter ; the 

 forehead is convex ; the nose tapers in front of the orbit, is rather 

 swollen and wide over the deeply concave cheeks ; the concavity is 

 deepest in the middle of the cheeks, and it is only separated from 

 the orbit by the narrow edge of the orbit. The canines are small, 

 the upper ones not recurved. 



3. PoTAMOCHtERUS. 



Face elongate, with a bony protuberance on each side, halfway 

 between the nose and eyes. Ears elongate, suddenly tapering, and 

 ending in a pencil of hairs. Tail thick, elongate, high up on the 

 runsp. Skull elongate ; brain-case swollen ; nose nearly of the same 

 width the whole length, rounded above, with a rather thickened 

 upper margin, and a deep concavity on the cheeks extending nearly 

 to the front of the orbit, and partly over and nearly covering the 

 malar process that supports the zygomatic arch. 



Male. Swollen, and often warty on the sides in front. Sheath of 

 the canine with a large broad process on the upper side of its base. 



Female. Side of the nose simple, and the sheath of the canine 

 with a well-marked ridge across the upper part of its base. 



Teats four. Young four at a birth, with longitudinal stripes. 



Koiropotamus, Gray, List Mamm. B. M. 185. 

 Choiropotamus, Gray, Ann. & Mag. N. H. 1852. 

 Potamockcerus, Gray, Anu. & Mag. N. H. xv. 66 ; Sclater, P. Z. S. 

 1860, p. 301 ; Fitz. Sitz. Akad. d. Wiss. 1864, p. 19. 

 Fhuscochoarus, sp., Jardine. 

 Fhacochcei'iis, sp.. Lesson in Tabl. R. A. 1841, p. 162. 



1. PoTAMOCHCERUS AFRiCANUs. Bosch Vark. B.M. 



Ears densely hairy ; internally white, with black edge and tuft. 

 Fur black. Head and back whitish or yellowish ; forehead and back 

 black-varied; large spot beneath the eyes black. 



Skull : male. 'J'he lateral tubercular ridge prominent, and elevated 

 above the upper surface of the nose ; lateral process on the base of 

 the sheath of the upper canine broad, compressed, reaching to the 

 level of the ujiper surface of the nose. Female with transverse 

 ridge at the base of the sheath of the upper canine. 



African wild boar, Daniel, African Scenery, t. 22. 



Sus africanus, Schreb. Saugeth. i. 327; P. Z. S. 1852, p. 131 ; 

 Blainv. in Laur. et Bazin, Anat. Phys. t. I ] . f. 9 (teeth) ; Blainv. 

 Osteogr. t. 8. f. 1; Gray, Griffith, A. K. t. ; Reichenb. Naturg. d. 

 Pachyd. t. 33. f. 129. 



Sus larvatus, F. Cuv. Mem. Mus. vii. 447, t. 22 ; A. Smith, S. A. 

 Quart. Journ. 90; Blainv. Oste'ogr. Onguligr. t. (skull). 



Sus koiropotamus, Desmoul. Diet. Class. H. N. vii. t. 1 ; P. Z. S. 

 1852, p. 131. 



Choiropotamus africanus, Gray, Cat. Mamm. B. M. 185. 



