18 ARKIV FÖR ZOOLOGI. BAND 12. NIO 13. 



Judging from this it may be concluded that both these 

 doffs have sprung from a common ancestral stock. 



On the other hand there are several points of likeness 

 between the skull of the Yaghan dog and that of a Coyote. 

 The incisors of both are very similar in shape and relative 

 size, f. i. with regard to the stoutness of i^. The premolars 

 of the former are of course smaller than those of the latter, 

 but they have about the same arrangement of the posteri or 

 cusps. With due regard to the reduction in sjze, the p^ of 

 the Yaghan dog also resembles that of the Coyote. About 

 the relative proportions of m^ has already been spöken above. 



Nehring's above quoted theory about the origin of the 

 Inka dog appears thus also to have its application for the 

 Yaghan dog, and it appears also most probable that the 

 ancestors of the Yaghan Indians brought dögs with them 

 from the north when they invaded the southern parts of the 

 continent and finally found their way to Tierra del Fuego. 



Tryckt den 3 september 1919. 



Uppsala 1919. Almqvist & Wiksells Boktryckeri-A.-B. 



