16 THE DESCENT OF THE PRIMATES 



is, as you will have understood, diametrically 

 different from what we have just discussed for 

 the Lemurs. 



It should here be remarked that the Lemurine 

 arrangement is analogous to what we find in the 

 pig, the horse, and other Ungulates, whereas 

 the Tarsius arrangement corresponds in varying 

 degree to what obtains in Insectivora, Eodents, 

 Bats, Monkeys, and Man. We must thus come 

 to the conclusion that, with respect to its pla- 

 centation, Tarsius more closely resembles an In- 

 sectivore than it does a Lemur, a conclusion sim- 

 ilar to that which was derived from its dentition. 

 Now, with respect to another peculiarity in its 

 early development, I am going to demonstrate to 

 you that Tarsius is more akin to a monkey than 

 a Lemur. And thus I may hope to justify the 

 conclusion which I have put forward that Tar- 

 sius is not a Lemur at all, that it should never 

 have been placed alongside of the Lemurs, but 

 that its position is somewhere between an 

 unknown type of Insectivores and our modern 

 monkeys and man. 



The peculiarity to which T here allude is of a 

 somewhat abstruse nature, and I will not attempt 

 to initiate you into the details of it. Suffice it 

 to say, that human embryologists have noticed in 



