TABLE OF CONTENTS, 



Pages. 



Preliminary considerations 487-491 



Family SACCOMYID.E 491-542 



Subfamily Perognathidin^e 495-521 



Genus Pwognalhw 496-515 



Peroguathus fasciatus 500-504 



penicillatus 504-509 



montieola 509-512 



hispidus 513-515 



bicolor 515-515 



Genus Cricetodipus 515-521 



Cricetoflipus flavus 51R-518 



parvus 519-521 



Subfamily Dipodomyinjj 521-542 



Genus Dipodomys 521-542 



Dipodomys pbillipsi - 540-541 



oidi 541-542 



485 



