382 



IR. R. I. rOCOCK ON THE EXTERNAL 



Tlie ear of Ctenodactylus is tolerably small, projects but little, 

 is sloped backwards, and is covered with hair behind and on the 



Text-figure 7. 



A. Eai' of Thrynomys swinderianus, from dned skin. 



B. „ Sydrochoerus capyhara. 



C. „ Dolicliotis patayonica. 



D. ,, Ccelogenys paca. 



E. „ CkincJiilla lanigera, the position of tlie orifice dotted in. 



F. „ liagostomus trichodactyltis. 



