152 Mr. H. W. Bates’s Notes on Longicorn Coleoptera. 
angustata, pilosa; ore parvo, mandibulis paullo exstantibus. 
Tubera antennifera longe barbata. Thorax trapezoidalis, a basi 
usque ad marginem anticum recte angustatum. Elytra convexa, 
apice conjunctim rotundata, carina laterali flexuosa, epipleuris 
altis. Antenne corpore longiores, usque ad apicem longe ciliatee. 
This new genus is necessary for the reception of Amphio- 
nycha megalopoides, which differs in form and in some points 
of structure quite as much as Chrysaperda from the rest of 
the Amphionyche. ‘The only example at present known 
appears to be a male. 
Ochromima megalopoides. 
Ochromima megalopoides, Bates, Ann. & Mag. Nat. Hist. ser. 8, xvii. 
p. 427 (Amphionycha megalopordes). 
Santarem, Amazons. 
CHRYSAPERDA. 
Corpus oblongum, convexum, erecte pilosum, nitidum, absque plagis 
tomentosis. Caput exsertum, inter antennas anguste depressum 
(tuberibus antenniferis elevatis), 2 vertice valde convexo, fronte 
elongata, infra paullo dilatata, oculis parvis rotundatis. Thorax 
valde transversus, antice angustatus, medio transversim convexus. 
Elytra oblonga, medio angustata, ante apicem rotundato-dilatata, 
apice late truncata, angulo exteriore dentato, dorso planata, 
postice citius declivia, epipleuris altissimis (postice altioribus) 
carina laterali acutissima paullo curvata, supra declivatatem api- 
calem subito terminata. Antenne corpore vix longiores, undique 
setose, scapo elongato gradatim clavato, articulo tertio longissimo, 
quarto ad sextum (precipue in 2) paullo incrassatis, apicalibus 
attenuatis. 
Resembles species of the genus Megalopus, tribe Phyto- 
phaga. Most of the generic characters are but an exagge- 
ration of what is seen in one or other of the species of Am- 
phionycha; but in combination, as we find them here, they 
seem to warrant the institution of a separate genus. 
Chrysaperda metallica, 
Flava, vertice plaga magna (orbitam ocularem includente) nigra niti- 
da; elytris (margine angusto laterali fasciaque latiore apicali flavis 
exceptis) cyaneis vel viridi-eneis, nitidis; antennis flavis, scapo 
basi et supra, articulis secundo et tertio (apice excepto) et septimo 
ad undecimum nigris ; elytris subcrebre punctulatis. 
Variat metasterno nigro-fusco, thorace supra rufo, antennarumque 
articulis primo ad tertium yix infuscatis. 
Long. 43-53 lin. ¢ Q. 
Ecuador (Buckley), Chanchamayo, Peru (Dr. Thamm). 
[To be continued. ] 
