THE ZOOLOGICAL JOURNAL. April— July, 1827. Art. XIV. A Description of some new Genera and Species of Petalocerous Coleoptera, By the Rev, Wm. Kirby, A,M. F.R.S. FMS, S^c. Having received from North America since the publication of the Eighth Number of the Zoological Journal, a third and very distinct species of Cremastocheilus^ I beg leave to offer, to the Editors of that Journal, as a continuation of mj former paper, a description of it, together with one of some other undescribed Petalocerous beetles. Subkingdom Annulosa. M'L. Class Insecta. L. Subclass Mandibulata. Clairv. Order Coleoptera. L. Suborder CHiLOGNATHiMoiiPHitA (*). M'L. Section LAMELLicoRNana. Lat. Subsection PETALOCERenA. Dumer. Tribe THALEROPHAGinA. M'L. iANTHOBIunA. M'L. /XYLOPHiLuna. Latr. Stirps Family Rutelid^. M'L. * r adopt this Suborder for reasons assigned elsewhere. (Introd. to Ent. iv. 92), where the above method of denominating groups is proposed. Vol. III. K