COLBOPTERA, HI 



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. 



A species called the militaris by Bonnelli, very similar to the 

 heros, but without the sutural tooth, and Avith antennae propor- 

 tionally shorter and more knotted, particularly in the female, 

 is found in the departments of the south of France. 



The characters drawn from the antennae are much less 

 strongly marked in another species from the same country — the 

 cerdo, L. — which is much smaller, narrower, entirely black, 

 and without a tooth at the extremity of the elytra *. 

 We refer to the same subgenus various species of Callichroma, 

 Dej., with a smooth or but slightly unequal thorax, which is pro- 

 portionally longer, and either of an oval shape, and truncated at both 

 ends, or almost cylindrical. They are foreign to Europe ; nearly all 

 of them belong to South America, and are of a small size. They arc 

 iisually highly decorated, and some of them have one or two globular 

 bundles of hairs on the antennae. Some even present this singular 

 appearance on their posterior feet. Fabricius and Olivier arranged 

 some of these species among the Saperdae, The thighs of these 

 Insects are generally clavate, and borne on a long pedicle, and their 

 antennaj composed of long and slender joints f. 



We will also unite to the same subgenus of Cerambyx the Gnomce 

 of Count Dejean. Their thorax is much longer and cylindrical. 

 The inner angle of the superior extremity of the joints of the an- 

 tennae is somewhat dilated. The palpi are almost filiform, and the 

 inner side of the mandibles exhibits a tooth. Of the two species, he 

 mentions one — G. rugicoUis, Fab. — as peculiar to Carolina, and the 

 other — sanguinea, Dej. — to Brazil. 



Those Cerambycini, in which the antennae are hardly longer than 

 the body, and rather filiform than setaceous ; where the thorax, always 

 unarmed, is sometimes almost globular or orbicular, and sometimes 

 narrower, almost cylindrical, and simply dilated and rounded in the 

 middle ; and where the palpi, always very short, terminate in a joint 

 somewhat thicker and wider than the preceding ones, and in the 

 form of a reversed triangle, constitute, in the early Avorks of Fabricius 

 and in the Entomology of Olivier, the genus 



Callidium, 

 Which is now divided into three. 



* For the other species, see Dej., Catalogue, &c., p. 105. In some, foreign to 

 Europe, the thorax is elongated and unarmed, as in the Gnomse. The Cerambyx 

 battus, and some others with spinous or serrated antennae, should form a particular 

 division to be placed after the preceding one. 



t The Callichroma; of Count Dejean — Catalogue, with the exception of the 

 ulpina, and probably the glohosa also. Refer to it also the Callichromae described by 

 M. Germar in his Insect., Spec, Nov.; the Callichroma scopiferuni, the Cerambyx 

 of the Entom. Ind., of M. Kiiig, and the Saperdu scohuHcornis of M.Kirby, Lin. 

 Trans. The Cerambyx perforutus, and the coUaris of Kliig, and the Gnoma clavipes 

 of Fabricius, are remarkable for the length of the thorax, and approach tbe Gaomse 

 of Dejean. 



