SUS-STUDIES. 173 



standing these molars are not at all used so that the skull 

 is not a very adult one, as indeed the distance between 

 tbe parietals behind (beginning crista) may demonstrate, 

 this distance being 45 cm. (in the very old skuW ot barbatus, 

 figured by Muller and Schlegel as verrucosus, with a well 

 developed crista and very used molars, these measurements 

 are 40 cm. lower jaw and 37 cm. upper jaw). 



For the shape of the lower canines in Siis verrucosus 

 and Sus barbatus I refer to a paper published by Dr. C. 

 J. Forsyth Major in the Annals and Mag. of Nat. Hist. 

 1897, p. 521. — In that very paper, p. 523, that author 

 says: »in some Middle Tertiary members of *S?<s no difference 

 "is to be found between the two sexes in the size or shape 

 ''of the tusks; both have their lower canines of moderate 

 ''size and width, the outer and inner side being of equal 

 "breadth, a. s. o." I cannot understand this sentense; I 

 should like to ask : how Dr. Forsyth Major knows that a 

 fossil ^Ms-skuU belonged once to a male or to a female 

 specimen, if, as he stated, there is no difference in the 

 size and shape of the tusks? 



In the lower jaw of the skull of Sus verrucosus, figured 

 plate 6, there is to be seen a very interesting ab- 

 normity; uml. instead of the third left lower premolar, 

 there are three normally developed ones, two of them 

 parallel to one another and to the ramus of the jaw, the 

 third however is planted square before the other two; 

 these three premolars are in one and the same alveole. 



From the foregoing discussion it is evident that b and c 

 under the heading of Sus verrucosus, exhibited in my 

 » catalogue osteologique", as belonging really to Sus bar- 

 batus, have to been removed under the latter heading. One 

 of these skulls has been figured in the » Verhandelingen" 

 and has been regarded by Dr. Nehring as a specimen of 

 his Sus longirostris, now as b and c are skulls of barbatus 

 as I demonstrated, it follows that Sus longirostris is merely 

 a synonyme of S. barbatus', Nehring's longirostris therefore 

 has to been cancelled. It may perhaps been allowed to 



Notes from the Leyden ]>{Euseutxi, ~Vol. XXVI. 



