488 



terrestris, Arvicola terrestris, 404 

 terrestris, Hypudseus, 401, 404 

 terrestris, Microtus (Arvicola), 400 

 terrestris, Mus, 404, 412 

 thayeri, Myopus, 184 

 torquatus, Arvicola (Georychus), 148 

 torquatus, Cuniculatus, 155 

 torquatus, Cuniculus, 148, 151, 153, 



155 

 torquatus, Dicrostonyx, 148, 151, 



153, 155, 157, 100 



torquatus, Dicrostonyx torquatus, 



148 

 torquatus, Hipudoeus, 148" 

 torquatus, Hypudaeus, 148 

 torquatus, Lemmus, 148, 100 

 torquatus, Misothermus, 103 

 torquatus, Mus, 148 

 torquatus, Myodes, 137, 148, 149, 



154, 155, 157, 160, 163 

 torquatus, Spalax, 148 

 trimucronata, Arvicola, 208 

 trimuoronatuSjArvicola (Georychus), 



208 

 trimucronatus, Lemmus, 208 

 trimucronatus, Myodes, 208 

 truei, Synaptomys (Mictomys), 175 

 Tylonyx, 137 

 Tyrrhenicola, 95; relationships of, 



58 



unalascensis, Dicrostonyx, 164 



unalascensis, Dicrostonyx hudsonius, 



154 

 unalascensis, Dicrostonyx rubricatus, 



154 

 ungava, Evotomys, 273 

 ungulatus, Dicrostonyx torquatus, 



149 

 ungulatus, Lemmus, 149 



vasconias, Evotomys, 229 

 vasconise, Evotomys glareolus, 229 

 vasconise, Evotomys nageri, 229 

 vesanus, Evotomys nageri, 228 



wardi, Anteliomys, 298 

 wardi, Microtus (Anteliomys), 298 

 worthingtoni, Alticola, 318, 319 

 worthingtoni, Alticola worthingtoni, 



319 

 wosnessenskii, Arvicola, 240 

 wosnessensldi, Evotomys, 240 

 wrangeli, Evotomys, 203 

 wrangeli, Synajjtomys (Mictomys), 



174 

 wynnei, Arvicola, 336 

 wynnei, Arvicola (Alticola), 330 

 wynnei, Hyperacrius, 336 

 wynnei, Microtus, 336 

 wynnei, Microtus (Alticola), 336 



yukonensis, Lemmus, 207 



15 JUL 1926 

 PRESENTED 



