EINAR LÖNNBERG, THE GENUS POTAMOCHCERUS. 31 



DiDiER has also pointed out that the members of a species 

 usually is smaller on the western side of the island and has 

 a tendency to albinism.» 



»I have myself several times had the opportunity of 

 seeing Bush Pigs in the neighbourhood af S:te Marie de Maro- 

 voay on the northwestern slope of the Ankara-fantsika plateau 

 and four times at so close quarters that I was able to 

 discern their general colour. At all these occasions the gene- 

 ral colour has been more or less rusty brown and the brist- 

 les on the neck and above the shoulders formed almost a 

 måne. Only once I saw a dark almost blackish brown indi- 

 vidual, but in company with normally coloiired specimens. If 

 both the supposed races of Bush Pig are to be found 

 at the places which I have visited I do not know, but it is 

 not quite impossible as the humid belt of the eastern side 

 turns westward at Nosy-Bé. I have also found Avahis at 

 S:te Marie de Marovoay, although this animal is regarded to 

 belong to the humid eastern region. It might be supposed 

 that the place mentioned is situated at the boundary line 

 between the dry and the humid regions and that therefore 

 the animals of both regions may be found there, although 

 the western elements are dominating.» 



By this communication it appears to be proved that 

 the small Bush Pigs with a narrow parietal area inhabit 

 the western part of the island and are more reddish in colour 

 than the other kind, which is larger more blackish and be- 

 longs to the eastern forest region. As has been set forth 

 above the type of Potamochoerus larvatus (F. Cuvier) has a 

 narrow parietal region of the skull and it is thus identical with 

 the small, western, reddish »lambo mena» of the natives. 



If we now turn to consider what Grandidier ^ says about 

 the type of his »Potamochoerus Edwardsi» we shall find the follo- 

 wing. It originates from Morondava on the (south-) west coast. 

 Its general colour is indicated to be »roux cannelle», and it is 

 of small size (»Taille petite>>). Grandidier's Bush Pig is thus 

 undoubtedly a »lambo mena» and consequently the specific 

 name »edivardsh is synonymous with F. Cuvier's »larvatus.» 



»Sus madagascariensis» was also from the west coast and 

 it is said to be» intense rufus. It is thus a »lambo mena» 

 as well. 



^ Rev. et Mag. de Zool 2 sér. T. XIX. Paris 1867, p. 318. 



