PLATE II. 



[Twice natural size.] 



Fig. 1. ReithrodGrdomysamcenus. Type, Reforma, Oaxaca. (No. 14064, Field Mus. 

 l\^at. Hist.) 



2. Reithrodontomys otus. Type, Sierra Nevada de Colima, Jalisco. No. 45705, 



U. S. Nat. Mus., Biological Survey Coll.) 



3. Reithrodontomys australis australis. Volcan Irazu, Costa Rica. (No. 116614, 



U. S. Nat. Mus., Biological Survey Coll.) 



4. Reithrodontomys dorsalis. Type, Calel, Guatemala. (No. 77009, U. S. Nat. 



Mus., Biological Survey Coll.) 



5. Reithrodontomys colimx colimse. Type, Sierra Nevada de Colima, Jalisco. 



(No. 45706, U. S. Nat. Mus., Biological Survey Coll.) 



6. Reithrodontomys rufescens luteolus. Type, Juquila, Oaxaca. (No, 71558, 



IT. S. Nat. Mus., Biological Survey Coll.) 



7. Reithrodontomys fulvescens tenuis. Mazatlan, Sinaloa. (No. 96713, U. S. 



Nat. Mus., Biological Survey Coll.) 



8. Reithrodontomys fulvescens difficilis. Orizaba, Vera Cruz. (No. 58268, U. S. 



Nat. Mus., Biological Survey Coll.) 



9. Reithrodontomys fulvescens helvolus. Type, Oaxaca, Oaxaca. (No. 68387, 



U. S. Nat, Mus., Biological Survey Coll.) 

 10. Reithrodontomys fulvescens toltecus. Type, Tialpam, B. F., Mexico. (No. 

 50746, U. S. Nat. Mus., Biological Survey Coll.) 



84 



