COLEOPTERA, 3 
studded with papillee, which M. Dufour has ascertained to be bursz, 
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 *. In the first, or that 
of the ScaraBmipEs, we find the antenne terminating 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 glo- 
bular. 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 antennee are more developed. This 
tribe { corresponds with the genus 
ScaraBpaus, Lin. 
The alimentary canal is generally much longer than that of the La- 
mellicornes of the following tribe or the Lucanides, and the cesopha- 
gus 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 Scarabeides are distinguished, not only from the latter, but also 
from all other Pentamera. Their testes, according to the observa- 
tions of M. Dufour, consist of spermatic capsules—tufts according to 
M. Cuvier—which are tolerably large, very distinct and pendiculated; 
the number varies according to the genus. 
The larvee—Cuv., Régn. Anim.—have a cylindrical stomach sur- 
rounded by three ranges of little czeca, 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, antenne, and. 
habits; divisions, the distinction of which has been confirmed by the 
researches of M. Dufour. 
The Copropaacr or the Scarabzeides of our first section usually 
have their antenne composed of nine joints, and of eight in the 
others, the three last forming the club. ‘The labrum and mandibles 
are membranous and concealed. The terminal lobe of the maxillee 
is also of the same nature, wide and arcuated at the superior margin 
and curved inwards. The last joint of the maxillary palpi is always 
the largest and almost oval or nearly cylindrical ; but the same of the 
labial palpi is almost always more slender than the preceding ones, 
or very small. Behind each of the latter palpi there is a membranous 
* The anatomy is so different, according 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, Sca- 
rabeus, Rutela, Melolontha, Glaphyrus, and Cetonia for the first tribe. 
+ 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 re= 
ceived; such in general are those of Fabricius, 
B 2 
