of the Amazon Valley. 13 
from which the Sporeti differ little, the two extremes are in 
reality closely bound together by connecting links, and, notwith- 
standing the almost endless multiplication of specific forms, 
have not diverged widely from a common plan of structure. 
The genus Palame is readily distinguishable from all allied 
genera by the hairy coxe and sterna of the male, and the 
absence of ovipositor in the female. 
Palame crassimanus, n. sp. 
P. oblonga, subcylindrica, nigro-olivacea, sericea : thorace vittis quin- 
que cinereis: elytris late subsinuato-truncatis, plagis cinereis 
nigro maculatis. Long. 33lin. ¢ Q. 
Head black ; forehead with three ashy lines, and outer orbits 
of the eyes ashy. Antenne black, bases of joints paler, those 
of the fourth to the sixth joints ashy. Thorax convex, above 
silky black, with five ashy vitte, the two lateral ones on each 
side, in some examples, being interrupted, and in others con- 
fluent. Elytra slightly narrowed from base to apex; apex 
broadly subsinuate-truncate, angles of the truncature obtuse, 
surface silky olive black, and with large ashy patches speckled 
with black; sides speckled with ashy tomentum: besides the 
setiferous punctures over the whole elytra, the basal part has 
a number of simple punctures. Body beneath ashy. Legs 
black, with ashy pile; tarsi and under surface of body naked in 
the female ; in the male the fore and middle tarsi are dilated and 
fringed with hairs, and have fulvous brush-like palms, the coxz 
and middle of the breast and abdomen being thickly clothed 
with brownish hairs. 
Generally distributed throughout the Amazons region, on both 
sides of the river. It is found on slender branches of fallen 
trees in the forest. The terminal segment of the abdomen of 
the female is scarcely visible beyond the tips of the elytra. 
Genus Toron £US, nov. gen. 
Body oblong, somewhat convex. Head and thorax of nearly 
equal breadth, and much narrower than the elytra. Antenne 
greatly elongated ; joints long and slender, sparingly furnished 
with setze both above and beneath. Thorax with a slight pro- 
tuberance on the sides a little behind the middle, in place of the 
lateral spies. Elytra without sete, and free from ridges and 
lateral carme. Terminal segment of the abdomen in the males 
with both dorsal and ventral plates more or less notched at the 
tip. Ovipositor of the females greatly elongated, and generally 
exserted beyond its sheath, tubular; dorsal plate of the terminal 
abdominal segment (constituting the sheath) slender and pointed, 
ventral deeply cleft at the apex. Legs moderately slender ; 
