6i6 



THE PRIMATES 



xxiii. 6- 



ca. 



Fig. 395. Bones of hind leg and foot of various primates (not to the 



same scale). 



a. astragalus (talus); c. cuboid; ca. calcaneum; cun. medial cuneiform;/, femur; 



fi. fibula; gt. greater trochanter; h. head; m. first metatarsal; n. navicular; 



p. proximal phalanx; pa. patella; t. tibia. 



cortex shows remarkably well-differentiated layers. The corpus cal- 

 losum is small and the anterior commissure large. The cerebellum is 

 small and simple. The posterior corpora quadragemina are large. 



Tarsiers are said to live in pairs with no social organization. The 

 reproduction shows much similarity to that of Anthropoidea. There 

 is a menstrual cycle. The uterus is double, as in lemurs, but the 



