CEETCHRESTUS. 205 



« 



inter oculos suffuse fusco bimaculato ; thorace transverso,flavo- 

 pubescenti, flavo, ad latera (antice) rufo-fusco ; elytris robust is, 

 subparallelis, punctato-striatis, subtiliter pubescentibus, a humeris 

 tisque ad postmediam suturam oblique Jlavo-vittatis ; antennis 

 robustis, nigris, art. 9-11 pallide testaceis ; pedibus fuscis, femo- 

 ribus posticis fulvis, tarsisque posticis rufo-fulvis. 



Long. corp. 2 tin., lat. 1 tin. 



Oblong-oval, tolerably robust, subpubescent, black. Head short, 

 depressed, subelongate ; eyes large, prominent, extending laterally as 

 far as the anterior angle of the thorax ; between the mouth and the 

 base of the antenna? is a transverse triangular plane depression ; above 

 the insertion of the antenna? is an obsolete medial longitudinal ridge ; 

 the surface below the eyes is in colour testaceous (the mouth being 

 broadly fuscous), above the eyes it is granulated and black, with 

 two suffused fuscous markings at the posterior margins of the eyes. 

 Thorax transverse, rectangidar ; the anterior angles are depressed ; 

 the sides marginate ; the surface is depressed, equate, flavo-pubescent, 

 and in colour flavous, with a margination (more broadly anteriorly) 

 of fuscous, and an obsolete longitudinal medial marking of rufo- 

 fuscous. Scutellum triangular, flavous. Elytra robust, subparallel, 

 punctate-striate, closely and finely pubescent, black: between the 

 fifth and the eighth stria?, a longitudinal band (which does not touch 

 the margination) extends from the shoulders nearly to the apex 

 (being rounded off as it approaches the apex from the margination 

 to the suture) ; its inner boundary is deflected abruptly and trans- 

 versely towards the suture near the middle of the elytra, the whole 

 forming an irregular semi-ovate band, the breadth of which is con- 

 siderably greatest near the apex. Antenna robust, with a tendency 

 to dilatation ; in colour black ; the ninth to eleventh joints pale 

 testaceous. Legs fuscous ; the anterior femora being testaceous, the 

 base of the posterior femora fulvous, and the posterior tarsi rufo- 

 fulvous ; the globular inflation above the posterior claw bright 

 piceous. 



C. marginicollis and the preceding species, C.flavimns, are excep- 

 tions to the general character of the genus, in that they have their 

 elytra broadly and distinctly marked with flavous colour : this species 

 is readily separated from C. fiavicans by the triangular marking below 

 the base of the antenna?, as well as by the obsolete longitudinal cari- 

 nation at the apex of the head ; it is more obviously separated by the 

 disposition of its markings on the thorax and the elytra. 



From the district of the Amazon, In the collections of Mr. Bates 

 and the Rev. H. Clark. 



