LIsT OF ILLISTKATinNS. XV 



Fig. 102. — Peromyscus eremicua fraterculus. Skulls, a, Type of Sitomys 



herronii Bhoads; b, type of Sitomys herronii nigellus Rhoads .. 436 



103. — Peromyscus eremicua fraterculus. Crowns of molar teeth. Type 



of Sitomys herronii Rhoads. a, Lower series; b, upper series 4:;7 



104. — Peromyscus eremicus anthonyi. Dorsal viewOf akull 439 



105. — Peromyscus merriami. Skull, a, Dorsal view; b, ventral view; 



c, lateral view 443 



106. — Peromyscus merriami. Crowns of molar teeth, a, Lower serie.-; 



b, upper series 444 



107. — Peromyscus tibufonensis. Skull, a, Dorsal view: b, ventral view; 



c, lateral view 445 



108. — Peromyscus tiburonensis. Cr< »wns i if molar teeth, a, 1 a >wer series; 



I), upper series 44.") 



109. — Sigmodon hispidus arizonse. a, Ear; b, forefoot; c, hindfoot; 



d, tail 446 



110. — Sigmodon minimus. Skull. a, Dorsal view; b, ventral view; 



c, lateral view 44 7 



111. — Sigmodon hispidus berlandieri. Crown of molar teeth, a, Upper 



series ; 6, lower scries - 450 



112. — Sigmodon hispidus arizonse. Skull of type, a, Dorsal view; 



b, ventral view ; c, lateral view 451 



113. — Sigmodon hispidus eremicus. Skull of type, a, Dorsal view; 



6, ventral view ; c, lateral view 452 



114. — Reithrodontomys megalotis. Skull, a, Dorsal view; b, ventral 



view ; c, lateral view 46 J 



115. — Reithrodontomys megalotis deserti. a, Hindfoot; b, forefoot, 



c, tail; d, outer lateral view of lower molars; e, same of upper 

 molars;/, crowns of upper molars; g, crowns of lower molars; 



h, lower incisors; /', upper incisors 4H2 



116. — Reithrodontomys longicauda. Skull, a, Dorsal view; b, ventral 



view; c, lateral view 465 



117. — Neotoma cumulator. Skull of type, a, Dorsal view; b, ventral 



view; c, lateral view 474 



118. — Neotoma cumulator. Crowns of molar teeth of type, a, Upper 



series; b, lower series 474 



119. — Neotoma intermedia. Crowns of molar teeth of a young individual. 



a, Upperseriea; b, lower aeries 485 



120. — Neotoma fuscipes macrotis. a, Ear; b, forefoot; c, hindfoot; d, tail. 188 

 121. — Neotoma pinetorum. Skull, a, Dorsal view; b, ventral view; c, 



lateral view 490 



122. — Neotoma pinetorum. Crowns of molar teeth, a, Upper series; b, 



lower series 490 



123. — Feet of Fiber zibethicus. a, Forefoot; b, hindfoot 195 



124. — Tail of Fiber zibethicus. a, Lateral view; 6, dorsal view 496 



125. — Microtus californicus. Skull, a, Dorsal view; &, ventral view: c, 



lateral view 499 



126. — Microtus californicus. Crowns of molar teeth. ", Upperseriea; 6, 



lower series 499 



