CLASS MAMMALIA 



663 



in size; they are covered with 

 fur, and usually possess a long 

 tail (Fig. 528). The face is 

 elongated ; the brain case is 

 relatively small, and the hind 

 limbs are always longer than 

 the fore limbs. The fifty liv- 

 ing species are mostly confined 

 to Madagascar and neighbor- 

 ing islands ; the rest inhabit 

 Africa and the Oriental region. 

 Lemurs are mostly nocturnal. 

 They feed on fruit and various 

 other substances, and are all 

 arboreal. 



The marmosets (HAPALID.E, 

 Fig. 529), are small arboreal 

 primates ranging from Central 

 toe has a flat nail, but the other 



FIG. 529. The golden marmoset, 

 Midas chrysoleucas. (From Flower 

 and Lydekker.) 



FIG. 528. The ring-tailed lemur, 

 Lemur catta. (From Flower and 

 Lydekker.) 



America to Brazil. The great 

 digits bear claws; the tail and 

 ears are long; the brain case is 

 large; the thumb is not op- 

 posable, and there is a wide 

 space between 'the nostril open- 

 ings. They feed upon fruit 

 and insects, and produce three 

 young at a birth. 



The Soujh American mon- 

 keys (CEBID.E) are arboreal and 

 of small or medium size ; the 

 thumb, as well as the great toe, 

 is opposable; all the digits pos- 

 sess nails ; the tail is usually 

 long and prehensile, aiding in 

 climbing ; the space between 

 the nostril openings is wide ; 



