Introduction

Historical

Methods, Materials, and Acknowledgments

Evaluation of Characters

Characters in which the Subgenera Eutamias and Neotamias Agree, but Differ from the Genus Tamias

Characters in which the Subgenus Eutamias and the Genus Tamias Agree, but Differ from the Subgenus Neotamias

Structural Features that are too Weakly Expressed to be of Taxonomic Use

Discussion

Table 1.—Characters by Means of Which the Genera Eutamias and Tamias Can Be Distinguished

Table 2.—Characters by Means of Which the Subgenus Eutamias and the Genus Tamias May Be Distinguished from the Subgenus Neotamias

Genera and Subgenera

Discussion

Conclusions

Literature Cited