COLEOPTERA. 539 



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(l). 



Count Dejean has detached from the Saperdze the genera Ades- 

 Mus, Apomecyna, and Colobothea. 



The Mesmi{2) only differ from the ordinary Saperdse, 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 

 intermediate one or the second, constitutes more than a third of the 

 total length of the antennae. 



The Apomecyn3e(^o) have a cylindrical body; the antennae are fili- 

 form, short, terminated by an acute point, and with the third and 

 fourth joint very long, and the following ones extremely short. 

 These species are peculiar to the East Indies and the Isle of France. 

 They are closely allied to the true Lamiae, and Fabricius places one 

 of them, the histrio, in that genus. 



The Colobothese, which include the major part of his Stenocori, 

 have their antennae closely approximated at their insertion, the body 

 compressed, and as if carinated laterally, and the elytra emarginated 

 or truncated at the end, with the exterior angle prolonged in the 

 manner of a tooth or spine. The thighs are clavate and pediculated. 

 The face forms a long square. These Insects are peculiar to South 

 America and to the most eastern islands of Asia that are situated 

 in the vicinity of the equator(4). 4 



Other Saperdse, and. all frorii Brazil, in which the thorax is as 

 wide as the elytra, or scarcely narrower; in which the third and 

 fourth joints of the antennae, or at least the preceding one, are much 

 elongated or dilated, and furnished with hairs, and the last ones are 

 abruptly shorter; and where the elytra are widened and rounded at 

 the end, form another division(5). 



(1) The species named longicoUis, giraffa, cylindricollis, and some others not 

 yet described. 



(2) See Dej., Catalogue, &c., p. 108. 



(3) Ibid. 



(4) Ibid. The Stenocorus pidus, — Oliv., Saperde, 68, iv, 40, — annulatus of Fa- 

 bricius. His Saperda acuminata appears to belong' to the same genus, as well as 

 the Insect figured by Olivier among the Cerambyces, pi. xvi, IIT, although its 

 thorax is bi-spinous. 



(5) Such are the Saperda amieta, togata, palUata, dascyera, cilidris, of the En- 

 tom. IJras., Kliig. The genus Thyrsia of Dalman — Anal. Entom., p. 171, vol. 

 HI — approximates in some respects to tliese species, but in others seems to ap- 

 proach the last of our Prionii- 



