482 CLASS VIIT. 



Here belong sub-genera Xyloterus ERICHSON (Trypodendron 

 STEPH.), Hopotenemus WESTW., ERICHS., &c. 



Scolytus GEOFFR. (Hylesinm FABR.). Head partly received in 

 thorax, produced into a rostrum short, thick. Tarsi with third 

 joint cordate or bilobed. 



Sp. Scolytus Ulmi DUMER., Hylesinus Scolytus FABR., GEOFFEOY Hist. d'Ins. 

 I. PI. v. fig. 5 ; DUMERIL Cons. gin. a. 1. Ins. PI. 17, fig. 3 ; EATZEBDRG 

 Forst-Ins. Tab. X. fig. 4 ; this species often destroys quantities of elms. 



Sub-genera: Phlceotribus LATR., Eccoptog aster HERBST, Campto- 

 cerus DEJ., LATR., Hylesinus FABR. (in part), LATR., and Hylurgus 

 LATR., and some others proposed by ERICHSON, 1. 1. 



Family LI. Rhynchophora (Curculionides ScHOENH.). Head an- 

 teriorly rostrate, with mouth at the extremity of rostrum. Antennae 

 inserted in rostrum, very frequently clavate at the extremity. Third 

 joint of tarsi almost always bilobed. Mandibles very frequently 

 small, strong. 



Beaked-beetles. These are all herbivorous and gnawing insects. 

 Their larvse have no feet or only tubercles in place of them. 

 A numerous family, of which above 7,000 species are known, 

 which in the last work of SCHOENHERR form more than 630 genera '. 



Compare on this family, amongst others : 



[CLAIRVILLE] Entomologie Helvetique, Vol. i. Zuric, 1 798, 8vo. av. fig. col. 

 C. P. TnuNBERGde Coleopteris rostratis commentatio, Nov. Act. Soc. Upsal. 

 Vol. 7, 1815, pp. 104 125 in C. J. SCHOENHERR Curculionidum Dispo- 

 sitio methodica, Lipsiae, 1826 ; and Syn. insector., see above, p. 465. 

 LATREILLE Ehyncophores, in Diet, class, d'ffist. not. Tom. xiv. 1828, 

 pp. 584 603. The celebrated German entomologist GERMAR, by different 

 communications in the Magazin of ILLIGER, and in that edited by himself 

 and ZINCKEN Magazin der Entomologie (TV. Bd., 1821, pp. 291345, 

 Genera qucedam, Circulionitwn proposita) and by descriptions of new species 

 and genera in his Coleopteror. species nov. Halse, 1824, 8vo. pp. 174461, 

 has conferred great services with respect to this family. 



A. Palps very short, conical. Labrum inconspicuous. 



Phalanx I. Curculionita (genus Curculio L. in part). Antennas 

 either arcuate or geniculate, with basilar joint or scapus mucli 

 elongated. 



1 Thus, about 300 more than LINNAEUS, in the 1 2th edition of his Systema naturct, 

 adopted for the whole animal kingdom. 



