ALLOCnROMA. 



189 



punctato, rufo ; eh/tris latis, punetato-striatis, nigris, fascia 

 transversa media flava, mtura quoque a fascia ad scutellum 

 latejfava ; antennis filiformibus, fuscis ; pedibus jlavis. 



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



Oval, broad, depressed, obsoletely pubescent, rufous. Bead very 

 short, vertical, slightly produced ; eyes large, prominent, extending 

 laterally as far as the line of the margin of the thorax : from the 

 labrum a longitudinal carination extends upwards to the insertion of 

 the antennae ; on either side of this are two other obliquely transverse 

 carinations extending to the sides of the mouth ; above the insertion 

 of the antennas, and between the eyes, is a transverse fovea : the sur- 

 face in front is glabrous, near the basal margin punctate, rufous. 

 Thorax transverse, rectangular, slightly constricted towards the 

 base ; the anterior angles are depressed ; the surface is thickly punc- 

 tate, rufous. Scutellum triangular, flavo-rufous. Elytra much 

 broader than the thorax, depressed, coarsely punctate-striate, dark 

 cinereous black : a broad postmedial flavous fascia extends from the 

 marginatum to the suture ; its lower boundaiy (as it approaches the 

 suture) inclines slightly towards the apex ; upon its anterior margin 

 it is rounded off from the margination upwards, extending obliquely 

 towards the scutellum, and bounded at the scutellary angles by the 

 second stria ; this flavous fascia is clothed throughout with yellow 

 pubescence, the extreme apex of the elytra being clothed with white 

 pubescence. Antennce filiform, attenuate, fuscous, the basal joint 

 being flavous. Legs entirely flavous. 



From the district of the River Amazon. 



9. Allochroma venustum. 



A. ovatum, robustum, impubescens, punctato-striatum, jkivo-ferru- 

 gineum ; capite brevi, inter ocidos foveolato, granulato ; thorace 

 transverso, ad basin depresso, punctato ; ehjtris robustis, punetato- 

 striatis (ad apicem obsolete), ante medium transverse subdepressis, 

 subtiliter pubescentibus ; antennis filiformibus, robustis, subin- 

 crassatis, jlavis, art. 7— 10 fuscis .; pedibus Jlavis. 



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



Ovate, robust, impubescent, punctate-striate, flavo-ferrugineous. 

 Head short, slightly produced in front ; above the labrum is a trans- 

 verse triangular depression ; eyes tolerably globose, black, situated 

 nearly at the base of the head, extending laterally nearly as far as 

 the anterior angles of the thorax ; between the eyes is a medial 

 longitudinal fovea ; the surface is finely granulated. Thorax trans- 

 verse (almost quadrate), slightly constricted towards the apex ; the 



