PRIMATES FROM MADAQASCAE. 



133 



(in millimetres) of 



1 humerus of Archceolemur majori {%) [14]. 

 1 humerus oi MesopropWiecus pithecoides [15]. 

 11 humeri oi Lemur [16-26]. 



their case similarity of conditions and mode of life has retained with hut little alteration 

 characters derived from such common ancestry. That Megaladapis, whose size has 

 corresponded with that of Man and the Anthropoid Apes, should have retained with 

 little alteration certain features of its limb-bones which connected it with these highest 

 representatives of the order, seems to me a more probable explanation than to maintain 

 that such features have been secondarily acquired. 



Palceopropithecus. — This radius is numbered 7 in Table 20. It is from the right 

 side. A reference to text-fig. 3-5 shows it to be a very stout, much curved bone. The 

 concavity of the head corresponds with the curvature of the capitulum of the humerus 

 of Palmopropitliecus described above, though the latter bone is from the left arm. 

 The circumference of the head also fits the lesser sigmoid cavity of an ulna which will 

 be referred to under the next heading. The posterior edge of the circumference of 



T 2 



