OCTOGONOTES. 163 



broader than the thorax, subelongate, slightly attenuated towards 

 the apex, punctate -striate, very finely pubescent (the pubescence 

 almost concealing the punctures, not the striae) ; in colour black, with 

 a marginal irregular fulvo-testaceous stripe extending from the 

 shoulder to the apex, and expanding towards the middle into a 

 broader and more regularly defined transverse patch. Antennce ro- 

 bust, filiform, subincrassated towards the middle ; piceous, the joints 

 eight to eleven being fulvous. Legs subpubescent, flavo-testaceous ; 

 the anterior tibiae and tarsi, and the upper surface of the femora, 

 being piceous ; the apex also of the posterior femora is black, and the 

 globular inflation of the posterior claw of a bright rufous colour. 



Cayenne. 



4. Octogonotes binotatus. (Tab. VI. fig. 7.) 



0. oblongo-ovalis, subparallelus, niger ; capite brevi, hand producto, 

 gramdato, nigro, inter oculos verrucoso ; lab/ro nigro ; oculis mag- 

 nis, exstantibus ; thorace transverso, complanato, angidis ante- 

 rioribus fortiter, posticis leniter oblique truncatis, ad latera mar- 

 ginato, pubescenti, stramineo, ad medium (prcesertim versus ca- 

 put et scutellum) nigro adumbrato ; scutello nigro ; elytris paral- 

 lelis, punctato-striatis, nigris, maculis duabus ad medium (stra- 

 mineis, circularibus, pubescentibus) ; antennis robustis, Jiliformi- 

 bus, art. l m0 valido, ad apicem subannulato, 2 ,l ° brevi, 3 tl ° et 4'° 

 elongatis, l mo ad 7 m0 nigris, 8 V0 , 9 n0 et 10 mo (forsitanque ll m0 ) 

 stramineis ; pedibus stramineis, tibiis tarsisque anterioribus, 

 femoribusque a superiori parte fusco -nigris. 



Long. corp. 3 lin., lat. 1^ lin. 



Oblong-oval, depressed, of a dull black colour. Head transverse, 

 short, not produced ; immediately above the insertion of the an- 

 tennas, which are contiguous, are two indistinct transverse and 

 somewhat oblong tubercles, forming together in shape the letter V ; 

 eyes large, prominent, reaching nearly to the margin of the thorax ; 

 the upper and posterior surface of the head is thickly punctate and 

 black, the front of the head pale flavous. Thorax broader than the 

 head, transverse, with the anterior angles distinctly and obliquely 

 truncate, thus forming, in appearance, a slight antemedial lateral 

 angle ; the posterior angles are very slightly truncate ; the sides 

 marginate ; the surface is clothed throughout (but especially at the 

 sides) with a fine silky pubescence of a cream colour ; medially, and 

 more distinctly at the apex and base, is a cloudy longitudinal fuscous 

 marking. Scutellum subcordiform, black, impunctate. Elytra some- 

 what depressed, distinctly punctate-striate (the surface between the 

 stria) is finely and thickly punctate), and clothed throughout, but 



m 2 



