247 
each elytron with four elongate patches, and a streak down the 
middle part of the suture, of dense bright-red tomentum (pallid 
in dried examples) ; one spot is near the scutellum, another 
underneath the shoulder, a third a little before, and a fourth a 
little after the middle. Body beneath and legs red. 
I took numerous specimens of this beautiful species on the 
leaves of a tree in the forest at Obydos, Lower Amazons. In 
life the red colour is of a clear vermilion hue. 
5. Amphiomjcha megalopoides, n. sp. 
A. brevis, oblonga, flavo-testacea ; capite lato, fronte nigra, bipeni- 
cillata, occipite nigro, bifasciato ; thorace postice transverse sul- 
cato ; elytris singulis maculis duabus nigris ; antennis rufo-testa- 
ceis, articulo quarto flavo, articulis 5®- 11“ fuscis. Long. 
lin. S • 
Head broad, pale testaceous, clothed with fine pubescence and 
long pale hairs ; face much narrowed below the eyes ; forehead, 
near each eye, furnished with a cluster of long, black hairs ; 
occiput with a black vitta behind each eye. Antennse a little 
longer than the body, fringed with long scant hairs; third joint 
nearly twice the length of the fourth ; basal joints reddish testa- 
ceous; fourth joint yellow, the rest dark brown. Thorax 
widened behind, and marked with a transverse sulcus near the 
hind margin ; pale testaceous, opake. Scutellum dusky. Elytra 
short and broad, oblong, slightly narrowed behind, apex rounded; 
lateral carina thick and flexuous ; surface punctured towards the 
base ; disk with two slightly raised lines, pale yellowish testa- 
ceous, clothed with fine silky tomentum ; a triangular spot over 
the shoulder and a round one near the suture, towards the apex, 
black. Body beneath and legs testaceous ; breast with a black 
belt. 
Santarem. Besembles in form and colouring certain species 
of Megalopus (family Phytophaga). 
6. Amphionycha Sapphira^ n. sp. 
A. elongata, angustata, postice sensim attenuata ; nigra, fronte, vitta 
coronali, vittis lateralibus thoracis lineisque quatuor elytrorum 
cseruleis ; his disco bicostatis, apice siniiato-truncatis, basi macula 
magna aurantiaca; antennis corpore longioribus, robustis, fili- 
formibus, nigris, dense ciliatis. Long. 5| lin. c? . 
Head a little broader than the thorax, deeply impressed on 
the crown, clothed with pale-blue tomentum ; occiput coarsely 
punctured, black, naked except on the pale-blue tomentose vittse. 
Antennse one-fourth longer than the body, stout, filiform, black, 
densely fringed to the apex; third joint elongated. Thorax 
elongated, cylindrical, uneven, broadest in the middle, black, 
