32 Frerp Museum or Natura History — Zoo .oey, Vor. XI. 
SuBGenus OCHROTOMYS. 
Peromyscus nuttalli aureolus (AUD. AND Bacu.). Southern Golden Mouse. 
Grnus REITHRODONTOMYS. 
[Reithrodontomys dychei ALLEN. Dyche’s Harvest Mouse.] 
Genus ORYZOMYS. 
Oryzomys palustris (HARLAN). Rice Field Mouse. 
SuBFraMiLy NEOTOMIN:. 
Genus NEOTOMA. 
SusGenus NEOTOMA. 
Neotoma floridanu illinoensis Howe. Illinois Wood Rat. 
SuBFAMILY MICROTIN.1 
Genus EVOTOMYS. 
Evotomys gappert (Vicors). Red-backed Mouse or Vole. 
GENus MICROTUS. 
SusGenus MICROTUS. 
Microtus pennsylvanicus (ORD). Meadow Mouse or Vole. 
SuBGENus PEDOMYS. 
Microtus ochrogaster (WAGNER). Prairie Meadow Mouse or Vole. 
[Microtus minor MERRIAM. Little Meadow Mouse or Vole.] 
SusGcEeNnus PITYMYS. 
Microtus pinetorum scalopsoides (AUD. AND Bacu.). Mole Mouse or Mole-like Vole. 
Genus FIBER. 
Fiber zibethicus (L1NN.). Muskrat. 
Genus SYNAPTOMYS. 
Supcenus SYNAPTOMYS. 
Synaptomys coopert BAIRD. Cooper’s Lemming Mouse.]* 
Synaptomys cooperi gossit (MERRIAM). Goss’s Lemming Mouse. 
Synaptomys cooperi fatuus (BANGS). Bangs's Lemming Mouse. 
Famity GEOMYID. Pocket GopuHers. 
Genus GEOMYS. 
Geomys bursarius (SHAW). Pocket Gopher. 
Famiry ZAPODIDZ. Jumpine Mice. 
SuBFaMILy ZAPODIN/. 
Genus ZAPUS. 
Zapus hudsonius (Z1MM.). Hudson Bay Jumping Mouse. 
Genus NAPAEOZAPUS. 
[Nape@ozapus insignis (MILLER). Woodland Jumping Mouse.] 
*T have seen no typical specimens of S. cooperi from Illinois, but i 
central part of the state are intermediate between cooperi and gossii. Specimens from the east 
