ORDER COLEOPTERA. I'M) 



SCARAB.EUS, Lin. 



The alimentary tube is in general much longer than that 

 N of the Lamellicornes of the following tribe, or that of the 

 lucanides, and the oesophagus is proportionally much shorter. 

 The adipose tissue, or epiploon, is generally almost nullified, 

 while here it is much more marked. But it is especially in 

 the genital male apparatus that the Scarabeides are distin- 

 guished not only from these last, but also from all the other 

 pentamerovis coleoptera. Their testicles, according to the 

 observations of M. Dufour, consist in spermatic capsulae, 

 tolerably bulky, very distinct, pedicled, and varying in num- 

 ber according to the genera. 



The larvae (Cuvier, Regne Anim.) have a cylindrical sto- 

 mach, surrounded with three ranges of small coecums, a 

 narrow intestine, very short, a colon extremely bulky, and 

 inflated, and a moderate rectum. 



^.Ve shall divide this genus into many small sections, esta- 

 blished on the consideration of the masticatory organs, the 

 antennae, and the habits — sections whose distinction has been 

 confirmed by the anatomical researches of the philosopher 

 above cited. 



The CoPROPHAGi, or Scarabeides of our first section, have 

 antennae usually composed of nine articulations, and of eight 

 in the others, of which the last three form the knob. The 

 labrum and the mandibles are membranous and concealed. 

 The lobe terminating the jaws is also of this consistence, 

 broad, and arched at the superior edge, and curved within. 

 The last articulation of the maxillary palpi is always the 

 greatest of all, almost ovaliform, or almost cylindrical, but 

 the same of the labial is almost always more slender than 

 the preceding, or very small. Behind each of these last 

 palpi is a membranous prominence in the form of a little 

 tongue. The mentum is emarginated. The sternum pre- 



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