240 
Thorax considerably broader than long, coarsely punctured, ex- 
cept on the disk, which is smooth, deep black ; sides each with 
a fulvous stripe. Scutellum black. Elytra dilated almost from 
the shoulders, and quite abruptly, at the apex singly rounded ; 
disk punctured, and having on each three longitudinal carinse, 
the two outer of which are united before the apex, and the inner 
one abbreviated ; expanded sides shagreened and traversed by a 
flexuous Carina ; colour wholly deep black with a violet tinge, 
except a white diaphanous belt across the middle, interrupted at 
the suture. Body beneath and legs black ; basal part of thighs 
testaceous yellow. 
Var. Base of each elytron with a small fulvous spot in con- 
tinuation of the thoracic stripe ; lateral edge of the elytron also 
fulvous near the base (approaching Klug). Tapajos. 
The typical form not uncommon at Ega, on leaves. The var. 
found only on the banks of the Tapajos. 
Genus Spathoptera, Serville. 
Serville, Ann. Soc. Ent. Fr. 1835, p. 50. 
Body elongated, dilated behind; facies of the genus Lycus, 
Head somewhat prolonged on the vertex; face elongated and 
dilated below the eyes. Thorax short, a little narrower than the 
head. Elytra dilated from beyond the middle, apex briefly 
emarginated. Legs short ; claws bifid. Prosternum narrower 
than the mesosternum. Antennae about the length of the body, 
or a little shorter ; basal joint greatly elongated, gradually and 
slightly thickened from base to apex, ciliated ; third and fourth 
joints greatly elongated, hairy and ciliated beneath, sometimes 
very thickly ciliated ; following joints short and sparingly setose. 
The lateral carina of the elytra is thick and prominent, and ex- 
tends from the shoulder to the apex. 
1. Spathoptera capillaceaj n. sp. 
S', elongata, postice dilatata, nigra ; capita thoraceque vitta laterali 
fulva, fronte rufescente ; elytris macula angular! humerali fasciaque 
lata pone medium fulvis ; antennis articulis tertio et quarto baud 
dilatatis, infra pilis longis densissimis nigris vestitis. Long. 6 lin. 
Head coarsely punctured; vertex elongated, shining black, 
with a fulvous vitta on each side behind the eye ; face dull red- 
dish, clothed with scant tawny pile. Antennae a little shorter 
than the body, black; fifth and sixth joints reddish ; third and 
fourth joints greatly elongated, neither of them thickened, but 
furnished on their under surface with a dense fringe of long 
thick hairs. Thorax coarsely punctured, shining black, with a 
fulvous stripe on each side. Elytra with their dilatation com- 
