COLEOPTERA. 537 



which arises from the lateral margin of the forehead, extends trans- 

 versely, and covers the eyes. 



All the species known are from Brazil. 

 Others of a very similar form, with antennae either bearded or 

 furnished with bundles of hairs, constitute the genus Pogonocherus, 

 Meg. Dej. 



Some of the species inhabit Europe, and nearly all of these 

 are remarkable for their elytra, which are truncated obliquely at 

 the extremity(l). 

 Others again, still slightly elongated, but with a more cylindrical 

 body, have each eye completely divided into two parts by the tu- 

 bercle which gives rise to the antennae they compose the genus 

 Tetraopes(2). 



Certain Lamiae of Fabricius, with a narrow and elongated body, 

 very long antennae, and a stout spine on each side of the thorax, in 

 which the anterior tibiae are slightly curved, and the intermediate 

 ones are furnished with a tooth on the outer side, form that of the 

 Monochamus, Dej. Monochammus, Dahl., Catal.; as those gentle- 

 men have not indicated its characters, I only give the above for such 

 as I presume them to be(3). 



In the " Catalogue de la Collection des Coleopteres" of Count De- 

 jean, with the exception of the apterous species, the remaining 

 Lamiae 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 Saperdae differ from the Lamiae in the absence of lateral points 

 on the thorax, these species, in this respect, would approach the 

 Saperdae; 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 Lamiae. Of these two species, that called 



L. cucurlionides, Fab.; Oliv., lb., IV, 67, x, 69, is one of the 

 prettiest that is found in France. It is about six lines in length, 

 brown, with round, black, villous spots surrounded by a ferru- 



(1) Ibid., 107. 



(2) See Schcenh., Synon. Insect., and the Catal. , Dej. The Cerambyx maxil- 

 losus, and nigripes of Olivier appear to approach these Insects. 



(3) See Dej., Catal., p. 106. 



(4) Another might have been formed with the Lamia hystrix, Fab., whose an- 

 tennae are pectinated. There are some such as the L. 5-fasciata, 3-fasciata, ea- 

 pensis, &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 pulchra, regalis, impe- 

 rialis, oculator, are rather more shortened and widened. 



Vol. III. 3 S 



