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



Skull measurements of Tayras from Gualea: 



Tayra bärbara madeirensis Lönnb. 



A flat native skin from Napo may by its general dark- 

 ness and the shortness of its adpressed fur be recognized as 

 belonging to this race. It has thus a quite wide destribu- 

 tion in the inner Amazonian region, as the type-locality is 

 Humaita, at Madeira River. 



Coiiepatus quitensis Humboldt. 

 5 skulls of different ages and 2 skins. 



Liitra pariliua Thomas. 



1 (} nearly adult, below Gualea, 3,000 feet above the sea. 



This specimen agrees on the whole with Thomas' de- 

 scription and some small diserepancies with regard to cranial 

 dimensions may be due to difference in sex as the type spe- 

 cimen was a »subadult female». For the elucidation of the 

 variation of the species the following measurements may be 

 quoted besides those of the type within brackets: 



^ Allén gives both for T. b. irara and senilis a measurement vvhich 

 he terms »Occipito-nasal length» and which is greater than the condylo- 

 basal, resp. basal length. I suppose this is a lapsus calami for total = 

 occipito-premaxillary length, because I have not seen any Tayras in which 

 the real occipito-nasal length is greater than the condylobasal length. 



