4^0 



REPOKT OF STATE GEOLOCJTST. 



preliminary work was done in that institution. The National Mu- 

 seum also afforded an opportunity to spend a month in field work 

 in the Kankakee Valley during the summer of 1905. The Field 

 Museum of Chicago and the collections of the Cincinnati Society 

 of Natural History each contains a few specimens of mammals, from 

 Indiana, and the writer is indebted to the authorities of these in- 

 stitutions for the privilege of examining them. 



Since 1904 the writer has spent a short time each summer in 

 collecting at his home in Ohio County. A part of the specimens 

 obtained there have been sent to the National Museum and others 

 are retained in the private collection of the author. 



During two years the author held a fellowship in zoology in 

 Indiana University, residing one year at Bloomington and one year 

 on University Farm at Mitchell. Considerable time was spent in 

 collecting and studying mammals at both places, the University 

 furnishing the necessary equipment, and this article is No. 100 

 of the contributions from the zoological laboratory of that insti- 

 tution. 



Finally, the Indiana Department of Geology and Natural Re- 

 sources has made possible two short collecting trips, one to the lake 

 region of the northeastern part of the State and the other to the 

 cypress swamps of the Wabash Valley. 



No one realizes more fully than the writer that the material thus 

 brought together is not adequate for -all purposes. It is believed 

 that all the species occurring in the State have been collected, with 

 the exception of a few that are not at all common, and only the 

 most intensive collecting in all parts of the State, or fortunate ac- 

 cident, can discover them. But the central part of the State has 

 scarcely been touched, and it is not possible to give, with even ap- 

 proximate definiteness, the limits of the subspecies which intergrade 

 in this region. The limits of some other species which do not have 

 a range including all of the State are also but poorly defined. Dis- 

 cussions of geographic distribution must therefore be limited, but 

 it is hoped that the accounts of the habits will partly make up for 

 this deficiency. 



The writer has not hesitated to use information from every 

 available source. The preliminary list and bi])liography of Indi- 

 ana mammals published by Evermann and Butler in the Proceedings 

 of the Indiana Academy of Science for 1893, and the additional 

 notes of Butler in the same publication for 1894, have been an 

 invaluable basis for the work. Of the general works, American 

 Animals, by Stone and Cram; Merriam's Mammals of the Adiron- 



