6 OOLEOPTEHA OF INDTAlsA. 



doubtful specimens of Mordellida?, of which family he has made a 

 special study. Frederick Knab of the U. S. National Museum at 

 Washington went over the MSS. and doubtful species of Chryso- 

 melidse, and also compared for me many other species with the 

 types in the museum collection. A. B. Wolcott of the Field Mu- 

 seum of Natural History, Chicago, a specialist in Cleridse, prepared 

 the MSS. for that family. Mr. Woleott has also collected for years 

 in the northern part of Lake County, Indiana, especially in the 

 sand-dune region bordering Lake IMichigan. All his Indiana ma- 

 terial was turned over to me for examination and furnished many 

 species which would otherwise not have been recorded from the 

 State. J. D. Hood of Urbana, Illinois, who has made a special 

 study of the sexual organs of Lachnosterna, passed in review my 

 species of that genus. Chas. A. Hart of the Illinois Museum of 

 Natural History, has kindly secured for me the loan of numerous 

 volumes from the library of that museum. To Dr. E. A. Schwarz 

 of Washington, D. C, and H. F. Wickham of Iowa City, Iowa, I 

 am also indebted for favors shown. 



Nor must I forget the memory of Dr. P. Stein of Indianapolis, 

 with whom I spent many an hour going over and classifying speci- 

 mens. Dr. Stein had a large and varied assortment of beetles from 

 different parts of the United States, a portion of which came into 

 my hands some years after his death. The pin labels bearing the 

 abbreviation "Ind. " were, however, few, and the dates of capture 

 wholly lacking. For that reason very few, if any, of his specimens 

 have been considered in the present list, though doubtless many of 

 the unlabeled ones came from this State. 



Harold Morrison of Indianapolis, C. C. Deam and E. B. William- 

 son of Bluff ton. Dr. Robert Hessler of Logansport, and Mr. and 

 Mrs. Max Ellis of Bloomington, have, from time to time, taken and 

 turned over to me numerous specimens, wliich have either added to 

 the species of the collection or aided much in showing their distribu- 

 tion within the State. 



RELATION OF A BEETLE TO OTHER ANIMALS. 



If we compare the body of a beetle with that of any vertebrate 

 animal, as a fish, bird or squirrel, we find at once sreat and import- 

 ant differences. The vertebrate is an animal with an inner bony 

 skeleton, two pairs of jointed limbs or appendages, and breathes by 

 means of lungs or gills, according as it dwells in air or water. The 



