COLEOPTERA. Il7 



side with a pointed tubercle. It is an inch long", of an obscure 

 black, with short antennae and granulated elytra. This Insect, 

 with some others, evidently leads to the apterous species, all 

 peculiar to Europe and those parts of Asia Avhich border on it, 

 and of which the larvae probably feed on the roots of plants. 

 These species form the genus Dorcadion of Dalman, which is 

 adopted by most entomologists. The antennae are generally 

 shorter than the body, and are composed of obconical joints, 

 which give them a nodulous appearance; their abdomen is a 

 sort of oval, or almost triangular. 



M. Megerle has formed the genus Parmena, with certain 

 small species that appear to me to be removed from the others 

 only by the antenna^, which are longer than the body, and as 

 their joints are more elongated, they become rather cylindrical 

 than conical. According to this, we would be obliged to con- 

 nect others with them, much larger, but presenting the same 

 characters, such as the frislis, liigubris, and funesta. 



Among those Avith short antennae, or the Dorcadions properly 

 so called, there is one very common in Europe, but almost ex- 

 clusively confined to calcareous localities, or to such as border 

 on that kind of soil called the L. fuliginator; Ceramhyx fuligi- 

 nator, L.; Oliv., lb. X,2I. It is about sixlines inlength; "black; 

 elytra sometimes cinereous, and sometimes blackish-brown, each, 

 in both cases, presenting three white lines, one along the suture, 

 a second along the exterior margin, and a third between the 

 two first, but not extending to their posterior extremity. Several 

 other species are found in Germany and the south of Russia*. 



In the other Lamiariae, the thorax is destitute of lateral tubercles 

 or spines, and is cylindrical; the body is always elongated, and in 

 some almost linear. They compose the genus 



Saperda, Fab. 



That wliich he calls Gnoma, restricting it to certain species from 

 Java, Sumatra, New Holland, &c., in the direction of the head, and 

 in the parts of the mouth, resembles the Lamiae; but the thorax is 

 as long as the abdomen, cylindrical, somewhat narrower in the mid- 

 dle, and destitute of spines and tubercles. The antennae are longer 

 than the body, and are sometimes furnished with bundles of hairs. 

 The anterior feet are elongated f. 



Count Dejean has detached from the Saperdae the g-enera Ades- 

 Mus, Apomecyna, and Colobothea. 



The A desmil only ditfer from the ordinary Saperdae in the first 

 and third joint of the antennae, which are, proportionally, much more 

 elongated ; the length of these two joints, added to that of the inter- 

 mediate one or the second, constitutes more than a third of the total 

 length of the antennae. 



* See Schoenh., Synon. Insect., I, 3, p. 307; and the Catalogue, &c., of Count 

 Dejean, both for this genus and Parmena. 



t The species named lonyicollis, giraffa, cylindricoUis, and some others not yet 

 described. 



♦ See Dej., Catalojue, &c., p. 108. 



