Pag* 



Haud of Red Uakari, palmar aspect 630 



Foot of Red Uakari , plantar aspect 631 



Liver of Red Uakari, from above 636 



Liver of Red L^akari, from below 637 



Part of side walls of skull of a New-world Monkey (Brachywus 



rubieutidus) 639 



Part of side walls of skull of an Old-world Monkey (Cercopitheem 



pyrrlwnotus) 639 



Brain of Red Uakari, seen from above 642 



Brain of Red Uakari, right half, seen from below 642 



Brain of Red Uakari, left half, seen from the outside 643 



Brain of Red Uakari, seen from the inside 643 



Map of part of the basin of the Amazons, to show the distribution of 



the Uakari Monkeys 647 



Right hind foot of Reithrodon alstoni 691 



Skull of Reithrodon aktoni 692 



Front part of skull of Reithrodon ti/jficus 694 



Csecura of Reithrodon ahtoni 695 



