134 PLETJROCriROMA. 



2. Pleurochroma nitidulum. 



P. oblongo-ovale, breve, robustum, nigrum; capite brevi, inter oculos 

 T foveolato, punctato,rufo ; iliorace transverso, rectangulari, sub- 

 punctato, rufo ; elytris robustis, striato-punctatis, nigris, nitidis : 

 antennis subincrassatis, robustis, flavis, ad apicem fuscis ; pecli- 

 busjlavis. 



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



Oblong-oval, short, robust, black. Head short, narrower than the 

 thorax, transverse, depressed, slightly elongated; eyes large; be- 

 tween the eyes, and above the base of the antennas, is a shallow T- 

 shaped depression; the surface punctate, rufous. Thorax broader 

 than the head, but distinctly narrower than the elytra, equate, 

 transverse, rectangular ; the anterior angles depressed, sides margi- 

 nate ; surface finely punctate, rufous. Scutellum triangular, fuscous 

 and rufous. Elytra broad, robust, slightly rounded at the sides, 

 with rows of punctures arranged as striae (these punctures become 

 obsolete towards the apex) ; black, shining. Antenna; short, sub- 

 clavate, robust; at the base flavous, at the apex fuscous. Legs 

 flavous. 



This species differs from the preceding by the form and sculpture of 

 the thorax, and also by the absence of the rufous band on the elytra. 



Amazon district. A single specimen, in the collection of Mr. Baly. 



3. Plenrochroma pallidum. 



P. oblongo-ovale, robustum, subcylindricum, rufmn ; capite brevi, de- 

 presso, super antennarum basin longitudinaliter depresso, punc- 

 tato ; iliorace transverso, ad apicem constricto, vermicidato ; ely- 

 tris latis, striato-punctatis ; antennis brevibus, sididavatis, ad 

 basin ful vis, ad apicem fuscis ; pedibus rufo-testaceis. 



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



Oblong-oval, short, robust, subcylindrical, rufous throughout. 

 Head short, depressed, not produced ; eyes large, extending laterally 

 not so far as the sides of the thorax ; above the insertion of the an- 

 tenna? is a longitudinal depression, dividing into two parts a trans- 

 verse slightly raised plane, which is smoother than the rest of the 

 head ; surface punctate. Thorax transverse, rectangular, somewhat 

 compressed towards the apex ; the anterior angles depressed, sides 

 marginate ; the surface smooth, vermiculate (with short irregular 

 impressed Hues). Scutellum triangular. Elytra broad, rounded at 

 the sides, with punctures arranged in the form of stria? ; these punc- 

 tures become obsolete towards the npex. Antennae short, subclavate ; 



