RODEXTIA, CHEIROPTERA, AND INSECTIVORA. -ilo 



is the Vespertilio Parisieiisis (fig. 686) of the Gypseous series 

 of Montmartre (Upper Eocene). A species of Horse-shoe Bat 

 (Ehi'iiolophus) is found at a lower horizon. Other species of 



Fig. 686. — VespertiUo ParisieiisU. Upper Eocene. 



Insectivorous Bats, referable to the extinct genera Nydilcstes 

 and Nyditherium, are found in the Middle Eocene of Xorth 

 America. In the Post-Tertiary of Europe and Xorth America 

 are found various remains of Bats, but all of existing types. 



Lastly, the Vampire Bats are represented by no less than 

 five species in the Post- Pliocene cave-deposits of Brazil, in 

 which country is found the living Phyllostoma spectrum. 



Order XV. Insectivora. — The fifteenth order of Mammals 

 is that of the Insectivora, comprising a number of small ]\Iam- 

 mals which are very similar to the Ptodents in many respects, 

 but want the peculiar incisors of that order, and are likewise 

 always furnished with clavicles. 



In the Insectivora all the three kinds of teeth are usually pres- 

 ent, hut the exact nature of the dentition varies considerably in 

 different cases. The incisors and canines present little specicd, 

 hut the molars (fig. 687) are cdways serrated with numerous 

 smcdl pointed eminences or cusps, adapted for crushing insects. 

 With one exception, clavicles are alioays present in a complete 

 form. All tlic feet are usually furnished unth five toes; edl the 



