MILLER AND REHN : NORTH AMERICAN MAMMALS. 3 



True are marked with an asterisk, so that the increase in each 

 genus during the past fifteen years may be made the more apparent. 

 References to alterations in generic names are also given, but the 

 concordance with the nomenclature of 1885, being sufficiently 

 indicated by the citations under species, is here omitted. The 

 type locality of each form is stated with all possible exactitude ; but 

 in the present lack of definite information on the subject, no attempt 

 is made to indicate the boundaries of geographic ranges. 



Among the many persons who have given valuable aid and 

 advice during the preparation of this paper, Mr. Witmer Stone, Dr. 

 J. A. Allen and Dr. Edgar A. Mearns are particularly to be mentioned. 



Class MAMMALIA. 



Subclass EUTHERIA. 



Superorder DIDELPHIA. 

 Order MAR SUPI ALIA. 



Suborder Polyprotodontia. 



Family DIDELPHIIDAE.^ 



Genus CHIRONECTES Illiger. 



1811. Chironectes Illiger, Prodr. syst. mamm. et avium, p. 76. 

 Type. — L'utra rainirna Zimmermanis^. 



1 For discussions of the nomenclature of certain genera of this family see Rehn, Amer. 

 nat., XXXIV, pp. 576-577, July, 1900; Allen, Bull, Ainer. mus. nat. hist., XIII, pp. 185-190, 

 October 12, 1900; Thomas, Amer. nat., XXXV, pp. 144-145, February, 1901. 



