LÖNNBERG, MAMMALS FROM ECUADOR AND RELATED FORMS. 11 



of this study it may be suitable to point out the difference 

 between the two Tayras which Consul Söderström has pre- 

 sented to this museum. Both are fully adult females and 

 can thus be directly compared with each other. 



Tayra $ from Camino de Chone : 



Head and neck påle ecru (Dau- 

 thenay 66, 4) a little grizzled with 

 brownish. Nose dar k brown. 



A well developed yellowish 

 white spöt on lower neck, 8,5 X 7,5 

 cm, surrounded with brown. 



Body above and below as well 

 as feet, verv dark brown almost 

 black with glossy fur. Long hair, 

 straight and rather stiff. 



Tail black. 



Length of tail without hair 

 (skin) 410 mm. 



Length of hind foot s. u. appro- 

 ximately 90,5 mm. 



Length of naked sole of hind 

 foot (softened) 69 mm (conf. fig. 1 A). 



Length of the fur of the back 

 about 20 mm. 



Tayra 9 from Gualea: 



Head and neck a little more 

 brown than raw umber (Dauthenay 

 301.2). Nose darker. 



No trace of a light spöt on 

 lower neck. 



Body and feet dark brown. Long 

 hair, less thick, softer, at least partly 

 somewhat wavy, with only little 

 gloss. 



Tail black. 



Length of tail without hair 

 (skin) 340 mm. 



Length of hind foot s. u. softe- 

 ned and as exact as possible 92 mm. 



Length of naked sole of hind 

 foot (softened) 59,5 mm (conf. fig 1 B). 



Length of the fur of the back 

 about 40 mm. 



These differences give quite a different appearance to 

 the two animals. Especially the consistency and develope- 

 ment of the fur is strikingly different, and it appears to indicate 

 different climatic conditions of their habitat. It ought to be 

 added that in the specimen from Camino de Chone the hair 

 on the sides of the neck is partly directed upwards, while in 

 the specimen from Gualea all the hair on the sides of the neck 

 is directed backwards as usual. 



The skulls are less different inter se, as the following 

 measurements pro ve. 



Tayra $ from 



Camino de 



Chone: 



Occipito-nasal length of skull .... 93,4 mm 



Condylo-incisive length 106 



Basal length 98 



Zygomatic breadth 64.7 



Interorbital breadth 24.4 



Breadth across postorbital processes . 34 



Least postorbital breadth 22.5 » 



Breadth of brain-case 45 » 



Greatest mastoid wiclth 51,5 » 



Tayra $ 



from 



Gualea: 



98,2 mm 

 110 

 100,5 



64 



26,3 



34,5 



24 



44,5 



50 



