COLEOPTERA. 413 



The Spondyles are also distinguished from the following genera by their 

 almost globular thorax, the margin of which is neither recurved nor furnish- 

 ed with teeth or spines. 



Their larva live in the interior of European Pines and Firs. 



In the third and last genus of this tribe, or 



Prionus, Geoff. Fab. Oliv. 

 The antenna 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 Cerambycini 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 surrounding, 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. Fab. 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 splniform tubercle on each side; antennx 

 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. 



Obrium, Meg. 

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



