SIGMODON. 



FIG. 38. SIGMODON H. BORUC/E. 



No. 10050 Am. Mus. Nat. Hist. Coll. Twice nat. size. 



UPPER TOOTH ROW. LOWER TOOTH ROW 



Enlarged 7 times. Enlarged 7 times. 



b.'" Beneath ochraceous S. h. furvus 



e." Above mixed yellowish and black, 



no chestnut tinge 5. h. toltecus 



i." Above dark dull brown S. h. microdon 



g." Above gray brown S. h. baileyi 



Size large; hind foot 32 mm. or more, 

 a/ Under parts white. 



a." Above pale cinnamon brown S. h. mascotensis 



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