of the Amazons Valley. 297 
antenne are half as long again as the body, filiform, and setose, 
the basal jot short and forming an oblong club, the third 
joint a little longer than the fourth, and the rest very gradu- 
ally decreasing in length. The legs are moderately long, the 
thighs slightly clavate ; the tarsi moderately short, with the claws, 
as before mentioned, armed each at the base with a large, acute 
tooth. 
Eumathes Amazonicus, n. sp. 
Eu. elongato-oblongus, supra planus, setosus, viridi-cinereus, obscure 
fusco maculatus; elytris dense et confuse punctatis; maris tar- 
sorum posticorum articulo primo valde elongato. Long. 5-54 lin. 
Head coarsely punctured, .clothed with grey pubescence. 
Antenne dingy grey. Thorax irregularly punctured on its sur- 
face, light-greenish ashy, obscurely varied with dusky ; lateral tu- 
bercles small, acute. lytra shghtly narrowed behind, plane 
above and free from cost, rather thickly but irregularly covered 
with small punctures, especially on the basal half, and clothed 
with short bristles; pale-greenish ashy, obscurely varied with 
dusky spots of various sizes. Body beneath and legs clothed 
with ashy pubescence. First jot of the hind tafsi in the male 
as long as the remaining joints taken together. 
Ega. Iam indebted to Mr. Alexander Fry for pointing out 
the differences between this species and its near relative Humathes 
undatus (Pascoe) of Southern Brazil. The great length of the 
basal joint of the posterior tarsiin the male, and the closer punc- 
tation of the elytra, are the chief distinguishing characters. 
Genus CHALCOLYNE, noy. gen. 
Closely allied to Gryllica, Thoms. (Classif. des Cérambye. 
p- 120), but differs in the thorax being armed on each side with 
an acute spiniform tubercle. Body oblong, clothed with short, 
stiff hairs; elytra subtrigonal, rounded at the tip. Head with 
long, slightly retracted face; mouth projecting ; palpi elongate, 
pointed; eyes ample both above and beneath, and nearly ap- 
proximating on the crown; antenniferous tubercles distinct, 
divergent. Antennz scarcely so long as the body, stout, the 
jomts simple and gradually tapering to the apex, basal joint 
thickened gradually from base to apex. Thorax subcylindrical, 
finely wrinkled transversely, sides each armed with an acute 
spiniform tubercle. Legs moderately elongated, thighs clavate, 
middle tibiz simple on their outer edge; tarsi about half the 
length of the tibize, broad, not compressed ; basal joint in all the 
feet short, triangular; claw-joint slender, projecting beyond the 
third jot to an extent equal to the length of the third joint ; 
claws widely divergent and strongly curved, furnished at the 
