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Show 536 INSECTA. The Ce1·ambyx longimanus of Linnreus and Fahricius belongs neither to this genus nor to that of Prionus, in which it was first placed, but forms a separate one-and such was the opinion of Illi. ger and Thunberg-of the tribe of the Lamiarice. It is the AcRoCINUS, Illig.-Macropus, Thunb. It is distinguished from all the Longicornes by the thorax, each side of which is terminated by a movable tubercle, terminating in a point, or by a spine. The body is flattened, and the. thorax trans. versa!; the antennro are long and slender, and the antcr10r legs longer than the others; the elytra are truncated at the end and tenninated by two teeth, the exterior of which is the strongest. .11. Zongimanus; Cerambyx longimanus, L.; Oliv., Col. IV, 66, iii, iv, 12, known by the vulgar name of the Cayenne Ilarlequin. The thighs and tibire of the two anterior legs are very long and slender. The movable tubercles of the thorax are terminated by a strong spine, and the elytra at·e beautifully variegated with grey, red, and black( 1 ). All the remaining Lamiarire compose but the single genus LAMIA, Which we will separate into two sections: those in which the sides of the thorax are sometimes tuberculous or rugose and sometimes spinous, and those in which it is smooth and cylindrical. The first are divided into those that are furnished with wings, and those which are apterous. The genus AoANTHOOINus, Meg. Dej., is formed of a great number of species, mostly from South America, in which the body is pro· portionally shorter, wider, depressed, or but slightly elevated, and the abdomen almost square and hardly longer than it is wide. The legs are robust, and the tarsi strongly dilated. There are several species in Europe, one of which, the L. cedilis, Fab., brown, with a greyish down, four yellow dots on the thorax, and two blackish bands on the elytt·a, is remark· able for the length of the antennre of the male, which is quadru· pie that of the body(2). Next to the Acanthocini should come the genus T APEINA of Messrs Lepeletier and Serville-Encyc. Method., X, 545. The antennce of the males are inserted into a posterior extremity of a long appendage (1) Add Prionua accentifer, Olivier. (2) For the other species see Catalogue, &c., Dej., p. 106. COI,EOPTEHA. 537 which arises from the lateral margin of the forehead, extends transversely, and covers the eyes. All the species known are ft·om Brazil. Others of a vet·y similat· fot·m, with antennre either bearded or furnished with bundles of hairs, constitute the genus PoGONOOHERus Meg. Dej.. ' Some of the species inhabit Europe, and nearly all of these arc remarkable for their elytra, which are truncated obliquely at the extt·emity( 1 ). Othe1·s again, still slightly elongated, but with a more cylindrical body, have each eye completely divided into two parts by the tuberclE' which gives rise to the antennre-they compose the genus TETRAOPES(2). Certain Lamire of Fabricius, \Vith a narrow and elongated body, very long antennce, and a stout spine on each side of the thorax, in which the anterior tibire at·e slightly curved, and the intermediate ones are furnished with a tooth on the outer side, form that of the MoNooiiAMUS, Dej.-Monocltammus, Dahl., Catal.; as those gentlemen have not indicated its characters, I only give the above for such as I presume them to be(3). In the "Catalogue de Ia Collection des Coleoptet·es" of Count Dejean, with the exception of the apterous species, the remaining Lamire of Fabricius retain the generic appellation of LAMIA; but it appears from another Catalogue, that of Dahl, that two species from France-cucurlionides, nebulosa-have been separated by M. Megerle to form another generic section, or MEsOsA( 4); if we suppose that the Saperdre differ from the Lamire in the absence of lateral points on the thorax, these species, in this respect, would approach the Sapet·dre; but their body is proportionally shorter and wider than that of these last Insects, and by this character they are more nearly allied to the Lamire. Of these two species, that called L. cucurlionides, Fab.; Oliv., lb., IV, 67, x, 69, is one of the prettiest that is fouud in France. It is about six lines in length, brown, with round, black, villous spots surrounded by a ferru- (1) Ibid., 107. (2) See Scha:nh., Synon. Insect., and the Catal., Dej. The Oeramhyx mazil· !oM, and nigripe3 of Olivier appear to approach these Insects. (3) See Dej., Catal., p. 106. (4) Another might have been formed with the Lamia !tystrix, Fab., whose an· tenn;e are pectinated. There are some such as the L. Sfasciata, 3fasciata, ca. penaia, &c., in which the sides of the thorax are rather rugose or plicated, than fur· nished with spines. Others, such as the species called the pulcltra, regalia, impe· ria/is, oculator, are rather more shortened and widened. VoL. 111.-3 S |