131 



The skulls of the Wild Hogs from Madras and the Himalaya in 

 the British Museum all appear larger, and have the hinder part of 

 the forehead not so high and dilated as in the common Domestic 

 Boar, much resembling the skull of the sows of that species. They 

 can scarcely be all from female aiumals of the Indian kind. 



I may observe that the nasal bones of this genus appear to elongate 

 and occupy a greater part of the length of the face in the adult than 

 in the young" animal. In the young they seldom extend beyond a line 

 even with the large foramen on the side of the face, but in the adult 

 they are generally produced much behind it. 



Genus 2. Babyrussa. 



The ears rounded ; tail and limbs slender ; face conical, simple ; 

 the hinder upper part of the intermaxillary bone smooth ; the upper 

 canines (in both sexes) coming out from the side of the jaw and bent 

 upwards from the base, and then arched backwards, sometimes even 

 spirally recurved. Hab. The Indian islands. 



1. Babyrussa ALFURUS. 



Genus 3. Potamochcerus. 



The ears elongate, suddenly tapering and ending in a pencil of hairs; 

 face elongate, with a long protuberance on each side halfway between 

 the nose and the eye ; the tail thick, high tip the rump ; the upper 

 part of the intermaxillary bone swollen, rugose ; the upper canines 

 arising from a prominent bony case on the side of the jaws, coming 

 out on the lower edge of the jaw and then recurved. Hab. Africa. 



Koiropotamus, Gray, Cat. Mam. B.M. xxvii. 



Choiropotamus, Gray, Ann. & Mag. N. H. 1852 (not Cheiropota- 

 mus, Cuvier, Oss. Foss.). 



1. Potamochcerus Africanus. 



Black ; cheeks whitish, with a large central black spot. 



African Wild Boar, Daniel, African Scenery, t. 22 <? . 



Sus africanus, Schreb. Siiugth. t. 327, head. 



Sus larvatus, F. Cmder, Mem. Mus. viii. 447. t. 22. Blainv. Os- 

 teog. xxii. t. a f t. 8y. 



Choiropotamus africanus. Gray, List Mam. B.M. 185. 



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



Sus koiropotamus, Des Moul! Diet. Class. H. N. Atlas, t. 7 ? . 



All the specimens which have come under my notice are coloured 

 as above described. But Dr. Andrew Smith (Zool. South Africa) 

 observes, scarcely any two specimens are of the same colour ; some 

 are brownish black, variegated with white, and others almost entirely 

 uniform light reddish brown. 



2. Potamochcerus penicillatus (Mammalia, PI. XXXIV). 



Bright red bay ; face, forehead, ears and a large spot on the front 

 of the legs black ; edge of the ears, whiskers, streaks over and under 

 the eye, and a continued sub-crested streak along the middle of the 



