CHARACTERS OF SOME HYSTRICOMORPH RODENTS. 



387 



The fore foot of Gcqoromys is very like that of Octodon, except 

 that the four main digits are relatively considerably longer, 



Text-figiu'e 10. 



A. Right fore foot of Erethizon dorsatum. 



B. „ hind „ „ the same (the sole is sometimes more expanded 



behind the haUux). 



C. „ fore foot of Coendu prehensilis. 



D. „ hind „ „ the same. 



/;, hallux ; e, prehensile expansion of sole. 



there are no enlarged papillae on the plantar or carpal pads, and 

 the external moiety of the carpal pad is relatively larger and 



