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Show 528 INSECTA. the third joint of tho antennce, and the three following ones al·e fur. nished with fasciculi of hairs( 1 ). There, the antenn:£ are shorte1· than the body, and pectinated or serrated. The thorax is transversal and dentated laterally. The elytra are widened posteriorly. CTENODEs, Oliv. KH.ig(2). Now the thorax, either almost square or cylindrical, or orbicular or nearly globular, is much shorter than the elytra, at least in those in which it is extended in width, and the prresternum presents neither carina nor pointed prolongation at its posterior extremity. The scutellum is always small, and the legs are approximated at base. A single subgenus, PHCENioooERus, Lat. Is removed from the following ones by the form of the antenn~or the male, the joints of which, commencing with the third, are prolonged into long and narrow laminre forming a large fascis or fan. But a single species is yet known-P. Dejeanii-and that is peculiar to Brazil. In the others, the antennre, at most, are spinous, or slightly ser· rated. Several, which are very remarkable for their colours, and the agreeable odour they diffuse, present an anomaly with respect to the relative proportions of their palpi: the maxillary palpi are smaller than the labials, and even shorter than the terminal lobe of the max. illce which frequently projects. Their body is depressed, and the anterior part of the head narrowed and pointed; the posterior tibire are often strongly compressed. They compose the subgenus CALLICHROMA, Lat.-Cerambyx, Fab. Dej. Among the species with simple, setaceous antenn::e, and a dilate~ thorax, spinous and tuberculated on the middle of its sides, and in which the posterior thighs are elongated and their tibire stronglr compressed, there is one in France, found on the Willow, that diffuse! a strong odour of roses. (1) Cerambyx barbico'rnis, Oliv.; ....... Trachyderes hirticornis, Schrenh.; Cerambyz hirticornis, Kirby. (2) Oliv., Col., VI, 59, his, I, 1; Schrenh., Synon. Insect., I, 3, P· 346;-The Otenodes zonata, minuta, gen·iculata, Kllig, Entom. Bras., XLII, 1, 2, 3. As the only knowledge I have of these Insects is through drawings, I merely place tbell. here from analogy. COLEOPTERA. 529 C. moschatus; Cerambyx moschatua, L., Oliv., Col. IV, 67, xvii, 7. It is about an inch long, entirely green or of a deep blue, and somewhat gilded in certain individuals. C. ambrosiacua, Stev., Charpent. Very similar to the preceding, but its thorax is entirely, or only on the sides of a blood-red. It is found in the south of Europe, in th~ Crimea, &c. South America and the tropical countries of the eastern continent produce several others( l). Othe1· Longicornes of the same division, but in which the maxillary pal pi, as usual, are at least as long as the labials, and extend beyond the extremity of the maxillce, are distinguished from the following ones by their antennre, which distinctly present twelve joints instead of eleven, at least in the males; they are always long and setaceous, and frequently spinous or bearded. The thorax is dentated or spinous on the sides. VVe will unite them in the sub· genus AcANTI-IOPTERA, Lat.-Callichroma, Purpuricenua, Stenocorus, Dej. Dalm. Certain species of America, in which the thorax is almost square or nearly cylindrical, and the elytra are most frequently terminated by one or two spines, form the Stenocorua of Dalman(2). Others, but generally peculiar to the western countries of the eastern continent, in which the body is tolerably elevated, the thorax almost globular, and the antennce are simple and without fasciculi of hairs, constitute the Purpuricenus of Ziegler and Dejean(3). (1) The Cerambyx virens, albitarsus, nitens, micans, ater, festivus, vittatm, serieeua, elegans, suturalis, latipes, regius, albicornis, &c., Fab. Certain African species, such as the Cerambyx longicornis, jlavicornis, and cla~ iger, pf Schrenherr, which, though very analogous at a first glance to the pre· ceding, appear to form a separate subgenus by their compressed antennre dilated near the end; but the mouth of the Cerambyx sex-punctatus of this same naturalist -8aperda 6-punctata, Fab.-which, from its analogy to the Cerambyx clavicorni!t -Sap. clavicornis, F'ab.-of the same, appears to be congeneric, in the propor-tions of its pal pi, resembles a Cerambyx properly so called. The Saperda hirsuticornis, Fab.-Kirby, Lin. Trans., XII, p. 442-is a Callichroma by its mouth, it is true, but differs from it in the antennre and the form of the body. (2) Insect. Spec. Nov., p. 511, et seq. (3) The Cerambyx Ka3hleri, Desfontainii, Fab. ;-C. buderuis, Goeze. The C. vinculatus of M:. Germar, which he refers to the Purpuriceni, is a Callichroma. M. Sahlberg, professor of Nat. History, has described nnd figured this last Insect under the name of Oerambyx zonatus, in a work entitled Periculi Entomograpltici, VoL . Ill.-3 R |