20 ARKIV FÖR ZOOLOGI. BAND 14. NIO 4. 



from Surinam side by side of those of a male skull from 

 Minas Geraes, and with the exception that the former has 

 somewhat smaller p^, m* and m, the dimensions of both 

 are very similar. From this may be concluded that there is 

 at most subspecific difference between the typical Grison 

 vittatus ScHREBER from Surinam and G. v. hrasiliensh Thun- 

 BERG from Southern Brazil. The name crassidens is elimi- 

 nated as a synonym. Whether the name allamandi ought 

 to take the place of canaster Nelson, as Nehring suggested, 

 or if it is synonymous with vittatus Schreber cannot for the 

 present be decided. 



The specimen from Ecuador resembles those from Southern 

 Brazil in having scattered white-pointed hairs on the belly 

 and also in other colour-characteristics, except that the light 

 hairs of the tail are decidedly buffy in colour. It is, how- 

 ever, uncertain what value can be laid on this, and as the 

 cranial dimensions, as has been shown above, agree with 

 those of G. hrasiliensis from S:a Catharina, I must use this 

 name for the Grison from Ecuador as well, until more ma- 

 terial may prove something else. 



Tayra bärbara senilis Allén. 



1 $, ^V9 1916, Gualea, 5,000 feet; I J", '^5 1918, below 

 Gualea, W. Cordillera, 4,000 feet altitude. Two male skulls 

 without skin from Gualea. 



The two complete specimens are similar inter se, and 

 they agree also with a specimen, which I had the pleasure 

 of receiving from Consul Söderström some years ago and 

 which I then identified^ with T. b. irara Allén. Since then 

 Allén has, however, named the Tayra of western Ecuador 

 as above. ^ 



The raain difference with regard to the exteriör of »irara» 

 and »senilis» should probably consist in the different colour 

 of the head and neck which are said to be »grayish brown» 

 in the former »yellowish white» in the latter. As the heads 

 of the present specimens certainly are yellowish, even if they 

 are not light enough to be termed yellowish white, I will 

 accept the name senilis for them. 



^ Ark. f. Zool. Bd 8. N:o 16, p. 11—13, 1913. 



^ Bull. Amer. Mus. N. H. Vol. XXXII, 1913, p. 484. 



