SUS-STUDIRS. 157 



specimens turns out to be not a Nangoei at all ! As however 

 Sus vittatus is the sole well-known Pig-species living in 

 Sumatra, there may be questioned to what species known 

 from neighboring islands we must bring the other specimen 

 just discussed? 



Before entering deeper into this question, v^e have to 

 return to the above mentioned skull without skin, the 

 largest of the three specimens. This skull has six molars 

 in each ramus of upper- and lower jaw and is a good 

 deal larger than the just discussed younger skulls (basal 

 length of cranium 29,5 cm. against 22 cm. and 20,7 cm.); 

 it has the profile-line slightly concave like in one of the 

 younger skulls — the noji-vittatus one — and has in common 

 with this skull all the above exhibited characteristics, as 

 far as the smashed condition of the upperparts of the 

 skull allows to judge of; distance of parietalia (later crista) 

 12 mm. This skull certainly is not that part of a vittatus- 

 individual. Is it perhaps together with the above mentioned 

 younger head and skull a true Nangoei'^ Which are the 

 external features of the Nangoei and in what differ the 

 bony parts of the Nangoei from the other known Pigs? 



There has been described in the Proc. of the Biological 

 Society of Washington, 1902, p. 51, a Pig from Sumatra, 

 collected by Dr. Abbott on the Indragiri river ; the des- 

 criber, Mr. Gerrit S. Miller Jr., called it Sus oi, after the 

 native name Nang-oi (as he spells it), evidently our Nangoei. 

 In no other collection was a second specimen. Mr. Miller 

 described it as: »an adult male, related to the Bornean 

 "aSi«.s barbatus Muller and Sus longirostris Nehring, exter- 

 "nally most like Sus barbatus^ skull essentially as in Sus 

 ^^longirostris, teeth smaller than in Sus longirbstris or Sus 

 '■'■barbatus ; the skull so closely resembles that of an adult 

 "male Sus longirostris from Borneo that it might readily 

 "be supposed to belong to an individual of the same 

 "species. Head as in Sus barbatus, except that about midway 



Notes from tlie Leyden IMuseum, "Vol. XXVI. 



