LAMELLICOKNIA. O 



I. Loin* of maxilla connate. (Pleurosticti.) 



i. Mandibles obtusely iKiitate at apex, and furnished with 

 transverse stria) on their posterior surface. 



1. Ninth segment of abdomen divided in middle by a 

 furrow, which makes the segment appear as if divided 



into two (DYNA8TIDB8.) 



2. Ninth abdominal segment simple CETOMIDES. 



ii. Mandibles furnished with a smooth tooth at apex, pos- 

 terior surface not furrowed ; ninth abdominal segment as 



in the Dynattiles MELOLONTHIDM. 



II. Lobea of maxillae separate. (Laparosticti.) 



The Laparosticti are further divided as follows by Chapuis and Can- 

 deze, following M. De Haan and others : 



i. Segments divided into transverse folds. 



1. Antennae composed of four or five joints. 



A. Mandibles furnished with numerous teeth . . . GKOTHCPIDES. 



B. Mandibles bidentate or tridentate. 



a. Mandibles distinctly tridentate COPBIDES. 



b. Mandibles obtusely tridentate APHODIIDKS. 



2. Antenna) composed of three joints TKOGIDES. 



ii. Segments simple, without transverse folds. 



1. Antenna composed of three joints; posterior lega 



very small (PA88ALIDE8.) 



2. Antennae composed of four joints ; legs strongly de- 

 veloped LTJCAWIDES. 



The Lamellicorns are very poorly represented in Britain, although 

 some of the species, such as the Stag-beetle, the Rose-beetle, and the 

 Cockchafer, are among our largest and most familiar species, as also are 

 the large species of Geotrupes, better known as the Dor- or Shardborne- 

 beetle. 



The two great families of the series may be divided as follows: 



I. Club of antennie subpectinate with the lamellae not capable of 



being placed closely together LUCAM i> . 



II. Club of antennae with the lamellae capable of being placed close 



together and fonning a compact club SCARAB t;u>.. 



LTJCANID.E. 



This family, which corresponds to the group Priocera of Dumeril, 

 may be divided into two great divisions, the Lucanini and the Passalini, 

 which are chiefly distinguished by the shape of the meiitum and ligula ; 

 as, however, none of the Passalini are represented in the European 

 fauna, we need not here consider them ; the family Lucanida, in its 

 widest sense, according to the Munich catalogue, contains seventy-two 

 genera and five hundred and twenty-nine species ; the genera, however, 

 of the Passalini, which in this catalogue number only twenty-seven, 

 have been since raised to sixty, and considerable additions have also been 

 made to the Lucanini. 



The Lu can idee are chiefly found in tropical countries ; only six genera 

 containing fourteen species occur in Europe, of which three genera, each 



B 2 



