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



bably nearly related and constitute subspecies of the same 

 group. To avoid confusion I have found it preferable to 

 give the present specimens the above name expressing the 

 type locality. The above mentioned remarkable uniformity 

 of the specimens have also induced me to do so. 



Nasua dorsalis Gray differs with regard to its general 

 »red brown» colour and its, to judge from the plate, rather 

 long tall with at least 8 incomplete rings. 



Nasua quichua jivaro Thomas. 



1 c? ad., 28^3 19] 9^ jjg^j, Baeza, road to Napo (Oriente), 

 5,500 altitude. 



This specimen differs somewhat in colour from the ori- 

 ginal description, but the cranial dimension agree fairly well 

 with those quoted by Thomas. ^ There are no »grey patches 

 on the anterior flanks behind the shoulder», the animal being 

 just as rufous there as otherwise. The pelage is rather glossy, 

 the anterior back lighter more yellowish rufous, but a little 

 overlaid with black tips to the hairs. The posterior back 

 and the tail more deep rust red rufous. There can hardly 

 be traced any rings on the tail except proximally on the 

 lower side. The under fur of the back is black, somewhat 

 paler in front of the withers. The flanks are paler, more 

 yellowish than the back. The lower side is dark sepia brown, 

 but much overlaid with long, somewhat silky whitish tips 

 to the hairs. Feet black. 



The palate is narrow so that it measures only 27,5. mm 

 across outside of the last molars. The combined length of 

 the two upper molars is 12,3 mm, and p* and the two mo- 

 lars measure together 17,5 mm (thus a little less than in 

 the type of N. q. jivaro = 19). By these small measurements 

 it approaches the Nasuella-gvoup or may form a transgression 

 to the same. It appears, however, a little uncertain whether 

 this Hollister's new genus can be maintained as such, that 

 is, if it can be sharply defined from the typical Nasua. 

 Some of the characteristics mentioned by the author quoted 

 do not hold good for the smallest of all »Nasuellas», viz. 



^ Ann. & Mag. N. H. (8) XIV, p. 59. 



