SUS-STUDIES, 183 



bands of light and black brown colored bristles. These 

 bauds are by advanced age still to be seen under certain 

 light and do vanish not so early as in the other banded 

 species. By the banded snout, the banded young ones, the 

 short ears and the bony parts, as will be demonstrated 

 below, celehensis has much more in common with vittatus 

 than with verrucosus as S. Muller and Schlegel suggested ; 

 herein I agree with Nehring and diifer widely from Forsyth 

 Major's opinion, who goes so far as to call the Celebes- 

 pig, Sus verrucosus celehensis ; we should like to ask why 

 not just the reverse; Sus celehensis verrucosus'? How does 

 he know that verrucosus is the older form? This may be 

 as it will, the fact is that our species nothing has at all 

 to do with verrucosus. 



The skull, figured in » Verhandelingen" Tab. 286is, figs. 

 2 and 3, is short and compact like in vittatus, not so 

 elongate as in oi, harhatus and verrucosus, and higher in 

 proportion to its length. On each maxilla there is a single 

 foramen infraorbitale like in vittatus and harhatus. The 

 premaxilla-bones stop not close to the upper incisors like 

 in verrucosus, but surpass their anterior border like in 

 harhatus and vittatus. There are in our collection besides 

 the typical very old male-skull, an old female-skull and a 

 not adult male-skull all from Forsten's voyage in Celebes, 

 of which in the very old male-skull the premaxilla pro- 

 trudes beyond the anterior border of the incisors not less 

 than 17 ram. This skull is an example of transformation 

 by extremely advanced age, a phenomenon not thoroughly 

 studied till now, although well known in Elephants, Foxes, 

 Phalangers a. s. o. ; in this Pig-skull nearly all the sutures 

 have vanished so that it forms as it were a compact bony 

 mass, with the upperparts very roughened and ploughed 

 with ridges and grooves like in Crocodile-skulls. The molars 

 are so very used, that the left lower ones are deformed 

 to a number of stumps, that the upper premolars are not 

 to be recognized as such, being a lot of mere stumps, that 

 of the six incisors nothing has remained as four small 



Notes from the Leyden IMuseum, Vol. XXVI. 



