204 CEKICHKESTTIS. 



are concolorous as to their elytra, by its smaller size and form of 

 thorax. 



From the district of the Eiver Amazon. Taken by Mr. Bates. 



9. Cerichrestus flavicans. (TAB. VIII. fig. 5.) 



C. oblongo-ovatus, subparallelus, niger ; capite brevi, depresso, inter 

 oculos T foveolato, punctato. nigro, ad basin late flavo notato ; 

 thorace transverso, subpubescenti, punctato, ad medium late longi- 

 tvdinaliter flavo vittato ; elytris sat latis, punctato-striatis, flavo 

 fasciatis, et apud marginationem (a fascia transversa ad Jiumeros) 

 flavo vittatis ; antennis robustis, subdilatatis, nigris, art. 9-11 

 testaceis ; pedibus fuscis, femoribus (ad basin) et tibiis posticis 

 flaunt. 



Long. corp. 21 lin., lat. 1-1 J lin. 



Oblong-ovate, subparallel, subrobnst, black. Head short, much 

 depressed, slightly produced ; eyes large, prominent, black ; above 

 the insertion of the antennae is a T-shaped depression, forming the 

 boundary of two obsolete tubercles ; the surface at the base is finely 

 punctate ; the labrum is of a bright black colour ; the surface between 

 the mouth and the base of the antennas is pale testaceous, above the 

 base of the antennas fulvous (the T-shaped depression being fuscous, 

 and a margin to the eyes broadly black). Thorax transverse, rect- 

 angular; the anterior .angles depressed; the sides marginate; the 

 surface is equate, finely pubescent, and punctate ; a broad medial 

 longitudinal marking of flavous extends from the apex (where it is 

 nearly the breadth of the whole thorax) to the base (where it is the 

 breadth of the scutellum) ; the colour of the margination is fulvous. 

 Scutellum triangular, flavous. Elytra broad, punctate-striate, finely 

 and closely pubescent : a transverse, irregularly defined flavous fascia 

 extends, medially, from the margination to the suture ; this fascia is 

 connected on either side with the shoulder by a broad marginal 

 flavous band. Antennae tolerably long, robust, slightly incrassated 

 towards the middle; black, the ninth to eleventh joints being pale 

 testaceous. Legs dark fuscous, with the base of the femora and the 

 posterior tibia3 flavous. 



This species, though allied to C. marginicollis, is clearly distinct ; 

 the colour of the thorax and the form of the marking of the elytra, 

 besides the diversity in the sculpturing of the head, amply separate it. 



From the district of the Amazon. Taken by Mr. Bates. 



10. Cerichrestus marginicollis. (TAB. VIII. fig. 6.) 



C. oblongo-ovalis, sat robustus, subpubescens, niger ; capite brevi, 

 inter oculos longitudinaliter leviier carinato, ad basin granulate, 



