338 Mr. J. S. Baly’s Descriptions of 
Antenne slender, filiform; head and thorax distinctly but not 
closely punctured ; elytra more coarsely and deeply punctured, the 
puncturing arranged in irregular rows; striz near the lateral 
border sulcate, their interspaces subcostate. Hinder pair of 
tibize inwardly curved, their apex produced, acuminate. 
3. Lamprospherus lateralis. 
Valde convexus, subrotundatus, postice paullo angustatus, 
niger, nitidus; thoracis lateribus late fulvis; pedibus 
nigro-piceis, femoribus tibiisque anticis obscure fulvis; 
elytris fortiter subseriatim punctatis, apice obsolete acumi- 
natis. 
Long. 12—2 lin. 
Hab. Brazil. 
4. Lamprospherus scintillaris. 
Rotundato-ovatus, valde convexus, viridi-zeneus, nitidus, subtus 
obscurior; labro antennisque flavo-fulvis, his apice infuscatis ; 
thorace remote punctato; elytris eneis, sat fortiter sub- 
seriatim punctatis. 
Long. 2 lin. | 
Hab. Amazons. 
Genus Cuatcoptacts, Chev., M.SS. 
Corpus rotundatum, semiglobosum. Caput in thoracem pro- 
funde insertum, breve, perpendiculare ; antennis gracilibus, 
subfiliformibus, corporis dimidio paullo longioribus. Thorax 
transversus, latitudine elytrorum paullo angustior, margine 
inferiori laterali incrassato ; supra convexus, nunquam gib- 
bosus, lateribus integris, muticis. /ytra confuse subseriatim 
punctata, interstitiis levibus; limbo inflexo horizontali, 
plerumque concavo. Pedes mediocres, modice robusti ; 
femoribus posticis muticis; tibiis paullo compressis ; un- 
guiculis appendiculatis. Prosternum subquadratum, sulcis 
suturalibus inter prosternum et episterna antica obsoletis ; 
episterni antici angulo externo antico ad thoracis angulum 
non producto. 
Type Chalcoplacis abdominalis, mihi, (Ann. and Mag. Nat. Hist. 
1859, p. 124). 
1. Chalcoplacis sumptuosa. 
Subrotundata, valde convexa, nigro-cerulea, pedibus fulvis, 
supra aurea; antennis nigris, basi fulvis; elytris distincte 
