COLEOPTERA. 



latter, as in all the following Longicornes, \s membranous and cordiform. 

 The Spondyles are also distinguished from the following genera by their 

 almost globular thorax, the margin of which" is neither recurved nor furnished 

 with teeth or spines. 



Their larvae live in the interior of European pines and firs. 



In the third and last genus of this tribe, or 



PRIONUS, Geoffroy, Fabricius, Olivier, 



The antennae are longer than the head and thorax, serrated or pectinated in 

 some; simple, attenuated near the extremity, and' with elongated joints in 

 others. The body is generally- depressed, and the thorax square or trape- 

 zoidal, and either dentated or spinous, or angular laterally. 



These insects only fly towards evening or at night, and always remain on 

 trees. Certain species foreign to Europe are remarkable for their great size, 

 and that of their mandibles. The larva of the P. cervicornis, which lives in 

 the wood of the Gossampinus, is eaten. 



2. The CERAMBYCi\K.have a very apparent labrum extending across the 

 whole width of the anterior extremity of the head ; their two maxillary lobes 

 are very distinct and salient; their mandibles of an ordinary size, and similar 

 or but little different in both sexes; their eyes always emarginated and sur- 

 rounding, at least partially, the base of the antennae, which are usually as 

 long as the body or longer; the thighs, or the four anterior ones at least, 

 are commonly in the form of an ovoid or oval club, narrowed into a pedicle 

 at base. 



The various genera of modern entomologists may all be united in the 

 genus 



CERAMBYX, 



C. heros. Fabricius. Length one inch and a half; black ; extremity of the elytra 

 brown and prolonged into a small tooth at the suture ; thorax extremely rugose 

 and with a pointed or spiniform tubercle on each side ; antennas simple. 

 Common in all the warm and temperate parts of Europe. The larva bores 

 deep holes in the Oak, and is perhaps the Cossus of the ancients. 



We will terminate this tribe with insects, which, in relation to their palpi, 

 form of their head, thorax and elytra, as well as in their proportions, present 

 remarkable exceptions or anomalies. 



We will commence with those in which the form of the thorax is very 

 analogous to that of the preceding ones. 



OSRIUM, Miger, 



Is characterised as follows: the head rounded, and not prolonged anteriorly 

 in the manner of a snout; pal} i filiform, the last joint terminating in a point ; 

 antennae long and setaceous; thorax long, narrow, almost cylindrical, or 

 forming a truncated oval. 



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