166 MAMMALIAN DESCENT. [Lect. YII. 



LECTURE YII. 



Insectiyoka — (concluded). 



As to the doctrine of the tlevelopmeut of the higher 

 from the lower forms of Eutlieria, I have, as yet, kept 

 Lack some of the l)est witnesses ; these are all foreigners. 

 And yet there is no need that we should go l)eyond the 

 sea to fetch witnesses to the truth of this doctrine, nor 

 that we should go into the depths of the earth ; the 

 proofs are nigh unto us, and surround us everywhere. 

 The Order Insectivora, in its present state, contains a 

 oreat variety of types, and neither my time, nor my 

 materials for work have enaljled me to study much more 

 than the representatives of al)out half the known t}^es. 

 In my last two Lectures, I have spoken of the structure 

 of the skull, especially of the Hedgehog, the Mole, and 

 the Shrew, each the head of a family, and famous 

 amono'st the tril»es of tlie Lisectivora. But I have 

 Avorked out the skull in its early stages in Centetes, or 

 the Tenrec ; in Galeopkliecu.^, or the Flying Cat ; and 

 in Rhynchocyon, a large, long-snouted, 2^^'<>^osciclean 

 Insectivore, from the east coast of Africa near Zanzibar. 

 I have only seen the adult Tiqxiia ; of this type I 



