THE EVOLUTION OF MAN 



type of Tarsitis of the Tertiary period would 

 certainly represent a further development of our 

 old friends of Cernays and New Mexico, which 

 show certain divergences from the original type 

 in the direction of the prosimia. The scientific! 

 name of these prosimiae is Lemuridae, and these 

 very ancient ancestors indicating this direction ! 

 have therefore been called "Pachylemuridae." 



Let us remark in passing that there is still a 

 very little group of mammals, the so-called in- 

 sectivora, such as the hedge-hog, moles, etc., 

 that likewise have a placenta similar to that of 

 Tarsius. It is among the hedge-hogs that this 

 placenta is distinctly visible. The student can 

 hardly fail to suppose that the hedge-hogs are 

 likewise in some way closely related to the side 

 line which branches off from the archetype in 

 the direction of monkeys. However, this ques- 

 tion is not yet settled. At any rate, the hedge- 

 hogs give the impression of being members of 

 a very ancient group, and they, more than any 

 other living mammals of the present day, seem to 

 have preserved most nearly, even in their ex- 

 ternal structure, the actual form of that primeval 

 group of Cernays and New Mexico. 



But, if we try to solve the question of the 

 ancestors of that original group itself, we are 



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