COLEOPTERA. 401 



in the Coprophagi, and contorted round itself; the chylific 

 ventricle is studded with papilla?, which M. Dufour has as- 

 certained to be bursse, intended for retaining the alimentary 

 fluid. The biliary vessels in number, and the manner of their 

 insertion, resemble those of the carnivorous Coleoptera, but 

 are much longer and more slender. 



We will divide this family into two tribes(l). In the first 

 or that of the Scarab^ides, we find the antennae terminat- 

 ing in a foliaceous and generally plicatile club, and composed 

 in others of joints that fit into each other, either in the form 

 of a reversed cone or nearly globular. The mandibles are 

 identical or almost similar in both sexes, but the head and 

 thorax of the males exhibit peculiar projections or eminences; 

 sometimes also their antennce are more developed. This 

 tribe(2) corresponds with the genus 



Scarab^eus, Lin. 



The alimentary canal is generally much longer than that of the Lamel- 

 licornes of the following tribe or the Lucanides, and the oesophagus 

 is proportionally much shorter. The adipose tissue, or the epiploon, 

 is generally almost reduced to nothing, whilst here it is well marked. 

 But it is chiefly by the genital apparatus of the males that the Sca- 

 rabacides are distinguished, not only from the latter, but also from 

 all other Pentamera. Their testes, according to the observations of 

 M. Dufour, consist of spermatic capsules tufts according to M. 

 Cuvier which are tolerably large, very distinct and pediculated; 

 the number varies according to the genus. 



The larvae Cuv. , Regn. Anim. have a cylindrical stomach sur- 

 rounded by three ranges of little caeca, a very short small intestine, 

 an extremely thick, turgid colon, and a moderate rectum. 



We will divide this genus into several small sections established 

 on characters drawn from the organs of manducation, antennae, and 



(1) The anatomy is so different, according 1 to M. Dufour, that these two tribes 

 should constitute as many families. The sections would then become tribes and 

 some of their divisions so many principal genera Copris, Aphodius, Geotrupes, 

 Scarabxus, Hutcla, Melolontha, Glaphyrus, and Cetonia for the first tribe. 



(2) In thus retaining the primitive extent of this division, we have acted in con- 

 formity with our first edition; we still think, however, that although we may reject 

 several of the genera established in modern times, there are some that must be 

 received; such in general are those of Fabricius. 



Vol. III. 3 A 



