424 Mr. F. P. Pascoe on new Neotropical Curculionidce. 



chalky- white scales ; the antennas, knees, and tarsi with a pale 

 bluish tint ; rostrum with a fine impressed longitudinal line ; 

 antennas slender, the club blackish ; prothorax slightly trans- 

 verse, a few scattered irregular punctures ; scutellum subqua- 

 drate, transverse ; elytra convex, a double row of small 

 punctures between each raised interstice, the apices slightly 

 produced, divaricate. 



Among the white members of the genus this species may 

 be distinguished by its subquadrate transverse scutellum, 

 convex elytra, and purer colours. 



Compsus vespertinus. 



C. sat late oblongus, baud depressus, squamulis albidis dense tectus ; 

 rostro capiteque supra et medio prothoracis pedibusque, basi 

 femorum excepta, laete aureo-cupreis ; antennis tenuibus ; scutello 

 oblongo. Long. 8 lin. 



Hab. Sarayacu, Chamicuros. 



Kather broadly oblong, not depressed above, covered with 

 nearly pure white scales ; rostrum and head above, middle of 

 the prothorax and legs, except the bases of the femora, more 

 or less of a bright copper with a golden tint ; antennas slender, 

 darker towards the club ; rostrum with a deep impression in 

 the middle, and another on each side ; prothorax above equal 

 in length and breadth, irregularly and sparsely punctured, 

 bisinuate at the base; scutellum oblong; elytra convex, a 

 double row of moderate-sized punctures between each raised 

 interstice, the apices produced, scarcely divaricate. 



In one of my specimens the copper-colour does not extend 

 to the prothorax. C. lacteus (Fab.), depressed above, with blue 

 legs &c, may be considered an ally. 



Compsus euchloris. 



C. elongato-ovatus, densissime laete viridi-squamosus ; rostro supra 

 convexo, integro ; scutello minuto ; elytris seriatim punctatis, 

 postice bituberosis, apicibus paulo productis. Long. 8 lin. 



Hab. Sarayacu. 



Oblong ovate, closely covered with fine, mostly opaque, 

 pure green scales, but with numerous golden scales inter- 

 mixed ; antennas and tarsi cobalt-blue ; rostrum convex above, 

 without any impressed line ; antennas slender ; prothorax 

 rather longer than broad, irregularly pitted above ; scutellum 

 very small ; elytra a little flattish above, each with a well- 

 marked gibbosity posteriorly, the apices slightly produced, 

 linearly punctate, the punctures small and shallow. 



In form resembling C. mirandus, but, inter alia, without 

 the black naked spots on the elytra. 



