526 INSECTA. 



the manner of a snout ; where the thorax is not widened from 

 before posteriorly, and does not present the figure of a trape- 

 zium or truncated cone; and where the elytra are neither 

 very short and squamiform, nor abruptly narrowed a little 

 beyond their base and subulate at the extremity. The spe- 

 cies of this subdivision might be designated by the title of re- 

 gular Cerambyci, in contradistinction to those of the following 

 one, which, in many respects, are anomalous, and the last of 

 which seem to be connected with those of the tribe that follows, 

 it. They compose the genera Cerambyx, Clytus, Callidium 

 of Fabricius, and some of his Stenocori, a different genus from 

 that similarly and previously so named by Geoffroy. They 

 form the genus Cerambyx of Linnaeus, to which we must also 

 add some of his Lepturse. 



Modern entomologists have augmented the number of these 

 generic sections, but their characters are so little distinct, and 

 so much blended, that these genera may all be united in one, 

 or in 



Cerambyx. 



A number of species, all from South America, proportionally shorter 

 and wider than the following ones, with the antennae frequently pecti- 

 nated, serrated, or spinous, are remarkable for the extent of their tho- 

 rax, the length of which is almost equal to that of the elytra; sometimes 

 glabrous, it is almost semi-orbicular, and nearly unidentated at the 

 posterior angles; at others it is very uneven and tuberculous. Their 

 presternum is either carinated or terminated in a point, or plane, 

 truncated, entire or emarginated at its posterior extremity, which 

 is laid on an anterior projection of the mesosternum. Their ante- 

 rior legs, at least, are remote at base. The scutellum is large in 

 several; the tarsi are short and dilated. 



Those of this division, in which the thorax, almost semiorbicular 

 and always very large, is smooth or simply grauulous, with a single 

 tooth on each side, at the posterior angles, in which the posterior 

 extremity of the presternum is plane and truncated, either unemar- 

 ginated, or marginated and laid on the mesosternum; where the 

 scutellum is always very large, and the legs are very remote, form 

 two subgenera, 



Lissonotus, Dalm. Cerambyx, Fab. 

 Where the antennae are long, strongly compressed, and serrated 



