X TABLE OF CONTENTS. 



Mammals of the Mexican Boundary Region — Continued. page. 



Peromyscus eremicus fraterculus 436 



anth. »nyi 438 



arenarius 441 



merriami 44."> 



tiburonensis 444 



Genua Sigmodon 445 



minimus 446 



hispidus texianus 448 



berlandieri ' 449 



arizonse 450 



eremicus 451 



Genus < )ryz< imys 454 



palustris texensis 454 



aquaticus 455 



Genus Reithrodontomys 456 



Key to Reithrodontomys found on the Mexican Boundary 457 



Reithrodontomys mexicanus intermedins 457 



laceyi 45S 



ful vescens 459 



arizonensis 459 



megalotis 4fX) 



deserti 462 



longicauda 464 



Genus Neotoma 467 



Key to the species ami subspecies of Neotoma found on the Mexican Boun- 

 dary 468 



Xeotoma floridana attwateri 4(59 



micropus 470 



canescens 471 



cumulator 472 



venusta 475 



albigula 476 



angusticeps 4s2 



intermedia 484 



gilva 4S6 



< lesert< trum 487 



fuscipes macrotis 4SS 



pinetorum 490 



mexicana 491 



bullata 491 



Neotoma bella 492 



stephensi 493 



Genus Filler 494 



zibethicus pallidus 494 



ripensis 497 



Genus Microtus 498 



californicus 498 



montanus arizonensis 500 



alticola 500 



leucophseus 500 



tnogollonensis 501 



mexicanus guadalupensis 501 



Index 503 



