58 ARKIV FÖR ZOOLOGI. BAND 14. N:0 4. 



The specimen from Gualea is a young female in which 

 tbe last molar is not yet developed, but still sunk in the 

 jaw bone where it can be seen. The lower milk-canines 

 have not been dropped, although the powerful permanent 

 canines have superseded them in length and grown to a 

 height of 21 mm. above the jaw-bone. In the upper jaw 

 the milk-canines have entirely disappeared. The change of 

 incisors does not seem to be completely ended. In spite of 

 these youthful characteristics the skull is rather big. Its 

 greatest length is 277 mm against 280,5 mm in Goldman's 

 type of spiradens, thus a difference of only 3,5 mm which is 

 very little for such a dimension. The occipitonasal length 

 is 260 mm against 270 mm in Mérriam's type of ringens 

 also a rather small difference, if the youth of the present 

 specimen is considered. In a similar way the zygomatic 

 breadth is found to be practically the same in this one and 

 the type of ringens, but about 8 mm more in the type of 

 spiradens. The interorbital breadth of the present specimen 

 is a little smaller than in the type of spiradens, but on the 

 other hand the breadth across the postorbital processes is 

 practically the same in both. From these facts may be con- 

 cluded that the White-lipped Peccari of Western Ecuador 

 when fullgrown is a larger animal than as well spiradens as 

 ringens. 



I have also compared the skull from Ecuador with some 

 skulls from other parts of South America viz. 1 from Para- 

 guay, 1 from Santa Catharina, S. Brazil, 1 from »Brazil» and 

 one from the Bolivian frontier to Argentina. ^ The last and 

 the one from Santa Catharina are of very old animals with 

 very much worn teeth, and they represent thus the maximum 

 size of the typical race. Their maximum length is, however, 

 only 11,6 to 13 mm more, and the occipitonasal length 7,5 

 to 15,6 mm more than the corresponding dimensions of the 

 Ecuador skull. In a similar way the zygomatic breadth is 

 8 to 13, the interorbital width 3 to 9 mm larger in the 

 former than in the latter. The breadth across the postorbital 

 processes is even larger in the Ecuador skull than in the 

 two from Brazil, but 8,5 mm smaller than in the old Boli- 



^ Some of these belong to the Zootomical Institute of the Stockholm 

 High School, and I am indebted to Dr. N. Holmgren for the loan of the 

 same. 



