500 CLASS INSECTA. 



In the following, the mesosternum makes no projection ; 

 the head is as large as, or even larger, (divers males) than 

 the corslet. The mandibles are smooth, or at least without 

 any thick down at the internal side. The body is always 

 flatted. 



In some, the eyes are not cut transversely by the edges of 

 the head, the jaws are terminated by a very slender lobe in 

 the form of a pencil, and without corneous teeth. 



LucANus (Proper), Lin. 



The digestive canal is much less elongated than that of the 

 scarabaeidae, but the oesophagus is much longer. The male 

 organs of generation also differ much from those of the pre- 

 ceding, the testicles being formed by the circumvolutions of 

 a spermatic vessel, and not by an agglomeration of capsules 

 of this nature. The adipose tissue, almost nullified in the 

 scarabseidse, is here abundant and disposed in clusters, which 

 converge to a medial line. 



We presume that the larva of our great Lucanus, which 

 lives in the interior of oaks, and passes some years 

 there before it undergoes its final transformation, is the cos- 

 sus of the Romans, or that animal having the form of a 

 worm, which they regarded as a delicate viand. 



L. Cervus, Lin. Oliv. Col. I. i. 1. Roes. Insect. II. Scarab. 

 I. iv. V. the male two inches long, larger than the female, 

 black, with the elytra brown ; the head broader than the 

 body ; mandibles very large, arched, with three very strong 

 teeth, two of which at the end are divergent, and the other 

 is at the internal side ; they also have some small ones. The 

 females, designated (in French) under the name of hiches^ 

 have the head more narrow, and the mandibles much smaller. 

 This insect flies in the evening during the summer solstice. 

 Its size and mandibles vary. It is to one of these varieties 



