INTRODUCTION. XXXV 



liy a lamellate mass of varying form, composed, usually, of three 

 joints, although the number sometimes reaches seven. The mass 

 may be oblong, as in the Melolonthinaj and Plcurosticti, or 

 Icnticuhir, or even globular in many Laparosticti, while in the 

 Lucanida3 the club is somewhat flattened, and the joints not 

 capable of that close apposition observed in the iScarabajidae. 

 The families are distinguished as follows: — 



lianifUse of club of nntoini;e not capable of close apposition, and usually 

 not flattened. (p. 234) Lucanid/e. 



I.auielke of club capable of close apposition, not flattened. 



(p. 237) SCARAB^ID/U. 



The place assigned tli.is scries in the present work is not that 

 usually followed in the books, most authors placing it between 

 the Clavicornia and Serrieornia. Such a course seems to dis- 

 troy the evident lead of these two series into each other, inasmuch 

 as the Lamellieornia have very little relation with either. We 

 were unwilling to follow this custom, as such, merely because 

 others had done so before, and but one course seemed open, 

 namely, to place them at the end of the Pentamera. Probably 

 the better course would have been to place them at the beginning 

 of the classilicatioa, following the ideas of Burmeister and others. 



PHYTOPHAGA. 



The few families contained in this series are almost incapable 

 of definition, and though each of them is characterized by an 

 appearance, or habitue, which cannot be mistaken, any attempt 

 to separate them l)y distinct characters has thus far been illusive. 



The following is the neaix-st approach that can at present, be 

 made to a tabulation of the families: — 



Antennae witli dilfiised sensitive surface ; tarsi dilated and spongy beneatli, 

 except in Hscinonia and Stenopodius. 2. 



Sensitive surface of antenna; in deep impressions ; tarsi not dilated. 



(j). 2(i4) Sl'O.M)YI,lli/K. 



2. Submentnvn not pedunculate. 3. 

 Submentum pedunculate. 4. 



3. Antenn.'R usually long or greatly developed, frequently inserted njjon 



frontal jirominences ; front often vertical, large, and quadrat(!; i)ro- 

 notuni rarely (Prionina') margined ; tibial spurs distinct. 



(p. 267) C'ERAMUYCIOil?. 



Antonnre moderate or short, not inserted upon frontal prominences ; 

 front small, oblique, sometimes (Ilispini, Oassidini) inflexed ; pro- 

 iiotum most frequfmtly margined; tibial spurs usually wanting. 



(p. 334) ClIlJYSOMKLlD.K, 



