E. LÖNNBERG, MAMMALOGY OF ECUADOR. 61 



premolar and from there the contour-line bends inwards (fig. 

 3) at the same time as the flanges merge into the palatal 

 plane, as mentioned above. Tn the other skulls the greatest 

 breadth is in front of the premolars, and the lateral contour- 

 line does not curve inwards in the same manner (fig. 4) and 

 the flanges do not merge into the palatal plane in such a 

 manner as the Ecuador skull displays. 



Another difference is to be s.een in the shape of the 

 molariform teeth. Goldman has pointed out the »mandi- 

 bular toothrows are more evenly tapering» in spiradens than 

 in D. p. pecari. He illustrates this by quoting certain mea- 

 surements. So is f. i. the anterior breadth of mj of spira- 

 dens 11,9 and the posterior breadth of the same 14,7 mm. 

 In the Ecuador skull this is not so pronounced, but the 

 anterior breadth of m^, 13,2 mm, is, however, narrower than 

 the posterior, 14,2 mm, while the opposite is the case in the 

 skulls from Paraguay, Brazil etc. In all of the latter the 

 posterior breadth of m^ is less than the anterior. The Ecua- 

 dor race thus resembles in this respect more the Central 

 American than the South American race. 



All taken together the White-lipped Peccari of Ecuador 

 appears to have an intermediate position between the typical 

 form and the more northern races, and this fact may justify 

 its naming with a subspecific name. From both it is distinct 

 with regard. to the colour, and from the southern ones by 

 the structure of its palate and dimensions of its teeth. 

 When fullgrown specimens are obtained they will probably 

 prove to be larger than the hitherto known races. 



Cranial measurements of White-lipped Pecaris: 



