THE MARMOSETS 



189 



allying them to the lower types of Mammals. It is in this group, moreover, that 

 we, for the first time, find the tail ringed with alternate dark and light bands ; a 

 feature occurring also in the lemurs and in some of the lower Mammals. As in the 

 American monkeys, the thumb of the hand cannot be opposed to the fingers, neither 

 are there naked callosities on the buttocks, nor are there pouches in the cheeks. 

 None of the marmosets have prehensile tails. Their hind limbs are always consid- 



MARMOSETS (I) COMMON MARMOSET, (2) BI,ACK:-TAII,ED MARMOSET, 

 (3) BIvACK-EARED MARMOSET. 



(One-fourth natural size.) 



erably larger and more robust than the front ones, and the great toe is invariably of 

 such small dimensions that, in a literal sense of the term, it has no sort of right to 

 its name. 



Many of the marmosets have the ears fringed with long pencils of hairs, which 

 give them a very peculiar and unmistakable appearance. Both in size and habits 



