TTTE MKASITRKMF.NTS OP A HKF/ri.K. 23 



tho brief (les('ri])ti()n.s whii-li follow, aiul tho keys should, therefore, 

 alira/fs Ix used in connection with the (lescri])ti()ns. It is also im- 

 portant to hear in mind that the cliaraeters used and statements 

 made, both iu the keys ami descrii)tions, are to l)e considered as ap- 

 plying oidy to the species of tlie Indiaiui fauna or those of adjoin- 

 ing States. They may be. and in g(Mieral ai'e, capable of much 

 wider application, but it is not safe to assume that such is the ease. 



In the "keys to genera" are included the characters leading up 

 to the names of those genera which, fi'om their known representa- 

 tion in adjoining States, are probably represented in Indiana, even 

 though no species belonging to them has as yet been taken. The 

 same is often true of the "keys to species." Many species are 

 therein included, but not thereafter described, whose known range 

 is such that it is very probable that they occur in some part of the 

 State. The future collector or student will therefore be able to 

 identify almost any species which may come to hand from Indiana 

 or adjoining territory. 



The number in parenthesis before the name of each species is 

 that of the Henshaw "List of the Coleoptera of America north of 

 Mexico," or the Third Supplement to the same. 



The dates given after the description of eaeh species are only 

 the earliest and latest at wdiich the species has been noted in the 

 State and do not, therefore, necessarily show the actual time of 

 appearance or disappearance. The asterisk (*) preceding the name 

 of a species indicates that the species was taken in the winter sea- 

 son in Vigo County, and was mentioned specitically in my "Notes 

 on the Winter Insects of Vigo County, Indiana," published in 

 Psyche, vol. VII, 1895-96. 



Measurements.-r-Sinee the beetles are mostly of small size, the 

 unit of measurement used in the descriptions is the millimetre 

 (mm.) which = .0394, or a little more than tA- of an inch. The 

 smaller divisions of the accompanying scale (Fig. oa) show% as ac- 



iiiiliiii iiiiiiiii iiii|Mii|iiii|Miimiihiii 



3 4 



Fij;. 5a. 



Nil IIIIIIIII 



curately as can be represented, the length of a millimetre. For all 

 practical purposes it may be remembered that 2.5 mm. = -i^ inch; 

 3 mm. =14- inch; 4 mm. ^ i -[- inch; 5 mm. = i inch; 7.5 mm. = 

 -i\ inch; 10 mm. = f inch; 12.5 mm. = ^ inch; 15 mm. = | inch; 17.5 



