. Classification of the Coleoptera of North America [microform]. Beetles; Coléoptères. mm XXVUl INTRODUCTION. Slridiilaliiiij ornnns, or ( IVu' iirndncinjy sound, exist in Viirimis riiinilics, iinij ciinsist u\' linely wrinkled sni'lai'i's, tVciiiicntiy wilii a iiciirly lusire; llic sonnd is iti'oiluix'd hy IViclion wilii sonio oiIrt part in \hv vifinily td' iIk'sl- slridnliitinj,^ surl'iu-'us. Tlic situation of tliese organs ineonsianl; thus ; llio Scura- l)iuidi« tlii'y are I'ound in Trox, on tlic asccndiiifif portion of tin; first ventral segment; in Slra' 'gns, on tlie p
. Classification of the Coleoptera of North America [microform]. Beetles; Coléoptères. mm XXVUl INTRODUCTION. Slridiilaliiiij ornnns, or ( IVu' iirndncinjy sound, exist in Viirimis riiinilics, iinij ciinsist u\' linely wrinkled sni'lai'i's, tVciiiicntiy wilii a iiciirly lusire; llic sonnd is iti'oiluix'd hy IViclion wilii sonio oiIrt part in \hv vifinily td' iIk'sl- slridnliitinj,^ surl'iu-'us. Tlic situation of tliese organs ineonsianl; thus ; llio Scura- l)iuidi« tlii'y are I'ound in Trox, on tlic asccndiiifif portion of tin; first ventral segment; in Slra' 'gns, on tlie propyii'idiuni, and in liiiryrns on liie inner siirf'ai.'e of the elytra, wideh in many Cerani- liycida" the nn'sonotnm iii Iront of i' " seutelluni is wholly or iu part eovered with a slrididaliMg ^•llr^aee, tiie sound Ijeiiiir pro- dneed liy the movement of thi' prothorax upon it. Ivxtensihie vesicles are ohsei'ved in one trihe of the I'annly .Ai.'. ; there are two jiairs, one proceeding from a lissure Ipenca'h the anterior angles of the prothorax; tlie other i)air 'rging outside of and anterior to tlie hind coxa'. The aliii\(' sketch of the external amiioniy of Coleopierous insects contains all that is neeessiirv to enalile the student to comprehend the following pau'es. .N'linierons other of struct lire exist, lint these are often of merely specilie or sexual value, and are dealt with in essays of a monographic naliu'e. TIIK CLASSIFJCATIOX OF COLKOI' Few persons, excejit those wlio have lieeu trained in the laliori- ons work of the lahoralory and liUrary. are aware (d'the iimnense dillieidty of dealing with comph'xes containing ^U(di vast muidiers of species as tlio>e \vhi( h constitute the ])rineipal inject types. 'The siiecies representid in the cidleclions of the anihors of this treatise are from our restricted fauna nmre than in iuiinl)er. The eiillectiou and the oliscrvation iu the field (»f tlies(^ sniull, li
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Keywords: ., bookauthorlecontej, bookcentury1800, bookdecade1880, bookyear1883
