46 Dr. J. E. Gray on the Madagascar River-Hog. 
when I gave the name madagascariensis to this species, that 
M. Grandidier, in the ‘ Revue et Magasin de Zoologie,’ 1867, 
tome xix. p. 318, had named the wild pig from Madagascar 
Potamocherus Edwardsti; and I gladly adopt his name, as 
it was published previously. 
All M. Grandidier says respecting this species is :—‘‘P. 
Edwardsti (nob.). Nom malgache Lambou. De la céte 8.0. 
(Moroundava). Roux-cannelle, crinitre blanchatre, épaisse ; 
membres d’un brun foncé. Taille petite. Les soies sont trés- 
longues ; les oreilles sont dépourvues de pinceau de poils a 
leurs extrémités; joues noires, encadrées de longues soies 
blanches.”’ 
The British Museum purchased of Mr. Edward Bartlett a 
young specimen of a wild pig from Ambodiaque, west of 
Tananarivo, the capital of Madagascar, which he names 
“‘Potamocherus madagascariensis.’ I have compared with 
this specimen a young bosch-vark (Potamochewrus africanus) 
in the British Museum from South Africa, and I can find very 
little difference between it and the much younger specimen 
from Madagascar received from Mr. Bartlett. 
The latter has the longer white hairs on the chine, which are 
black at the base and form a black spot between the ends of the 
bladebones ; and it agrees in the general colouring, and only 
differs from the larger specimen in having the short black stripes 
on the sides rather less indistinct, evidently the remains of 
the dark spots with which the very young bosch-varks are 
marked. 
The skull of this specimen, which is probably that of a 
female, has the impressions on the side of the nose only 
slightly defined, and the zygomatic arch is thin and with a 
rounded outline beneath. ‘The nose is slender and rather flat, 
and rounded on the sides of the upper edge, but was in too 
young a state to afford any specific characters. 
I was inclined to believe it to be the young of the continental 
species. I had not seen an adult skin from Madagascar ; 
and unfortunately the skull was in too young a state to show 
the characters of the species. But Mr. Edward Gerrard, jun., 
has since brought to the Museum the skull of an adult male 
river-hog (Potamocherus) from Tamatava forest in Madagascar, 
which proves that the Madagascar animal is a very distinct 
species, characterized by the narrowness of the nose, with a 
rounded upper edge, the width of the skull at the zygomatic 
arch, and the angular outline of the lower edge of this arch, 
and by the situation of the aperture for the vessel in the lower 
jaw, which seems to be a permanent character, as it is uniform 
