340 Mr. J. S. Baly’s Descriptions of 
two short but stout teeth; middle of disc strongly raised, the 
gibbosity being separated, by a broad longitudinal sulcus, into 
two mamillose protuberances; the bases of each surrounded by 
a broad ill-defined circular groove. Elytra even more coarsely 
rugose than the thorax: on their surface are numerous short, 
strongly elevated ridges, which are arranged in three or four lon- 
gitudinal rows. Four hinder thighs each armed beneath with a 
short tooth. 
2. Chalcophyma leta. 
Ovato-rotundata, valde convexa, nitida, subtus zneo-picea, 
supra metallico-viridis ; antennis rufo-fuscis, his basi tarsisque 
fulvis; thorace lateribus rotundatis, ante medium angustatis, 
obsolete bidentatis, dorso convexo, ad Jatera crebrius, disco 
remote foveolato-punctato ; elytris fortiter sed remote punc- 
tatis, punctis substriatim dispositis, interstitiis planis, 1m- 
punctatis; femoribus quatuor posticis subtus obsolete uni- 
dentatis. 
Long. 14 lin. 
Hab. Amazons. 
Antenne slender, rather longer than the body; above bright 
metallic green, beneath zeneo-piceous, with a faint violaceous 
tinge. 
3. Chalcophyma tarsalis. 
Ovato-rotundata, valde convexa, cuprea, subtus nigro-picea, 
nitida; pedibus purpureo-eneis; labro, tarsis, antennisque 
fulvis, his obscuris, articulis septimo apice penultimo 
ultimoque totis fuscis; thorace lateribus rotundatis, obsolete 
bidentatis, dorso profunde foveolato-punctato ; elytris sub- 
remote fortiter punctatis, infra basin transversim depressis, 
modice elevato-costatis, costis antice interruptis ; femoribus 
quatuor posticis subtus unispinosis, 
Long. 2 lin. 
Hab. Amazons. 
Head punctured, face obliquely strigose on either side, im- 
pressed in the middle with a broad, longitudinal furrow. 
Thorax deeply impressed with numerous punctiform fovee, 
which are rather less crowded in the middle of the disc; on the 
centre of the Jatter are also four or five slightly raised impunctate 
spaces. LElytra subacutely rounded at their apex, very convex, 
their hinder portion obliquely deflexed; surface subremotely 
punctate, the punctures arranged in irregular striae; on each 
