PANCHRESTUS. 141 



at the apex and sides. Antennae robust, incrassated towards the 

 middle ; joints first to fourth ferrugineous, fifth to eighth (which 

 are dilated) black, ninth testaceous, tenth and eleventh black. Legs : 

 the posterior femora short and broadly dilated ; the colour through- 

 out fusco -rufous. 



From the neighbourhood of Santarem (River Amazon). Taken by 

 Mr. Bates. 



4. Panchrestus rnfescens. (TAB. Y. fig. 6.) B.M. 



P. latus, robustus, subpubescens, punctatus, rufo-ferrugineus ; capite 

 punctulato ; thorace transverse, angulis anticis subacutis, ad 

 latera marginato et (ad medium} angulato, angulis posticis obli- 

 que truncatis, punctato ; elytris striato-punctatis ; antennis ro- 

 bustis, ad apicem subdilatatis, flavis, art. 6-11 piceis ; pedibus 

 testaceis, femoribus posticis rufo-flavis. 



Long. corp. 2 lin., lat. 1 lin. 



Ovate, broad, parallel, subpubescent, punctate, of a pale rufo- 

 ferrugineous colour throughout. Head short, hardly produced in 

 front ; above the labrum is a transverse triangular depression ; above 

 the base of the antennae, between the eyes, is an obsolete Y-shaped 

 fovea ; eyes globose, oval, lateral, situated at the base of the head ; 

 the surface of the head is finely punctate. Thorax transverse, slightly 

 broader than the head ; the anterior angles are depressed and sub- 

 acute ; the sides marginate, the margination being produced ante- 

 medially and laterally into a distinct angle (somewhat resembling in 

 form the genus Octogonotes) ; the posterior angles are distinctly ob- 

 liquely truncate ; at the base is an obsolete subcircular depression ; 

 the surface is coarsely impressed with shallow punctures. Scutellum 

 triangular, impunctate, situated below the plane of the elytra, testa- 

 ceous. Elytra broad, parallel, antemedially transversely depressed, 

 punctate, sparingly flavo-pubescent. Antennce robust, subincrassated 

 towards the apex ; the joints three to five are subequal in length and 

 attenuated, the rest short and slightly dilated; flavous, the joints 

 six to eleven being piceous. Legs testaceous, the posterior femora 

 and inflation of the apical claw being rufo -flavous. 



This species differs from P. rubicundus in its paler colour, its gla- 

 brous elytra, and the character of the punctuation on its elytra, which 

 is not so coarse and less frequent ; from P. quicker it differs by its 

 distinct (not obsolete) punctuation, while from P. inconspicuus it may 

 readily be separated by the angular margination of its thorax. 



A single specimen, taken by Mr. Bates at Santarem, in the district 

 of the Eiver Amazon, is in the collection of the British Museum. 



