248 
coarsely punctured ; sides each with a broad vitta of clear light 
blue, the black parts naked. Scutellum black. Elytra narrow, 
elongated, tapering from base to apex, the latter briefly sinuate- 
truncate, with both angles produced and acute ; disk coarsely 
punctured, except near the apex and along the two slightly 
raised lines ; lateral carina straight ; colour blue black, shining, 
with the suture, a line along the disk, and lateral margins 
pale blue ; a rounded orange-coloured spot at the base of each 
elytron. Body beneath and legs clothed with fine blue-grey 
pubescence. 
I met with one example only of this remarkable species, at 
Ega, on the Upper Amazons, on a leaf. 
7. Amphionycha cephaloteSj Pascoe. 
Amphionycha cephalotes, Pascoe, Trans. Ent. Soc. n. s. vol. iv. p. 250. 
A. modice elongata, linearis, rufescens ; elytris lateribus fuscis, apice 
suturaque antice cinereo sericeis ; capite lato, convexo ; thorace 
postice strangulato ; elytris linearibus, supra planis, punctato- 
striatis, apice rotundatis ; antennis corpore paulo longioribus, 
longe ciliatis, nigris, articulis tribus vel quatuor terminalibus 
flavis ; tibiis extus fuscis. Long. 4 lin. 
Found at Ega, Upper Amazons, and on the banks of the 
Tapajos, on foliage. 
8. Amphionycha megacephala, n. sp. 
A. linearis ; capite valde convexo, nigro, polito ; antennis nigris ; 
thorace nigro, lateribus vitta castanea testaceo plagiata, marginis 
postici lineola et scutello albis ; elytris supra planis, crebre punc- 
tatis (apice excepto), basi fulvo-brunneis, medio nigris, apice 
cinereo-sericeis. Long. lin. 
Head large and convex both above and in front ; mandibles 
large, strongly curved ; glossy black, lower part of the face 
greyish toinentose ; cheeks with a small white spot under each 
eye. Antennae a little longer than the body, filiform, finely 
fringed, black; third joint about twice the length of the fourth. 
Thorax cylindrical, uneven, marked above with a few large 
punctures, black, sides each with a broad tawny-chestnut stripe, 
in which is a paler spot ; anterior margin with two small spots ; 
hind margin in the middle with a short white line. Scutellum 
white. Elytra linear, apex rounded; surface plane, closely punc- 
tured (except near the apex); colour tawny brown near the base, 
black across the middle, ashy tomentose towards the apex, the 
colours not sharply defined. Body beneath black ; breast and 
base of abdomen glossy tawny red ; sides of the mesosternum 
with a white spot. Legs black. 
Ega. There is another species of large- headed 
