PLATE I. 



[Twice natural size.] 



Fig. 1. ReitJirodontomys Jiumulis humulis. Raleigh, N. C. (No. 189304, U. S. Nat. 

 Mus., Merriam Coll.) 



2. ReitJirodontomys humulis merriami. Austin Bayou, Tex. (No. 44849, U. S. 



Nat. Mus., Biological Survey Coll.) 



3. ReitJirodontomys albescens griseus. Type, San Antonio, Tex. (No. 87852, 



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



4. ReitJirodontomys albescens albescens. Type, Kennedy, Nebr. (No. 116358, 



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



5. ReitJirodontomys montanus. Medano Ranch, Costilla County, Colo. (No. 



150714, U. S. Nat. Mus., Biological Survey Coll.) 



6. ReitJirodontomys megalotis megalotis. Dry Creek, Socorro County, N. Mex. 



(No. 158319, U. S. Nat. Mus., Biological Survey Coll.) 



7. ReitJirodontomys megalotis dycJiei. Onaga, Kans. (No. 147132, U. S. Nat. 



Mus., Biological Survey Coll.) 



8. ReitJirodontomys megalotis saturatus. Las Vigas, Vera Cruz. (No. 54434, 



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



9. ReitJirodontomys raviventris raviventris. Berkeley, Cal. (No. 93208, U. S. 



Nat. Mus., Biological Survey Coll.) 



10. ReitJirodontomys raviventris halicoetes. Type, Petaluma, Cal. (No. 7146, 



Mus. Vert. ZooL, Univ. California.) 



11. ReitJirodontomys megalotis zacatecse. Valparaiso Mountains, Zacatecas. (No. 



91912, U. S. Nat. Mus., Biological Survey Coll.) 



12. ReitJirodontomys megalotis alticolus. Type, Cerro San Felipe, Oaxaca. (No. 



68392, U. S. Nat. Mus., Biological Survey Coll.) 



82 



