of the Amazons Valley. 371 
ing smooth spaces on the disk, and having a deep transverse 
impression behind ; black, with a fulvous vitta on each side of 
the upper surface. Elytra nearly linear, being very slightly 
dilated a little before the apex, the latter, on each elytron, pre- 
senting a very shallow emargination with a short spine at its 
outer side; surface densely punctured, partly in lines, and with 
several interstices slightly raised, black; a straight humeral 
spot, pomted behind, the basal part of the lateral edges, and a 
straight fascia about the middle fulvous. Body beneath tawny 
yellow ; sides of thorax and breast and middle of the abdominal 
segments black. Legs black, base of thighs yellow. 
EKga. 
Genus TyRINTHTA, nov. gen. 
This genus includes a number of species which agree with 
Hemilophus in the great length and dense clothing of the third 
and fourth (or, at least, the third) antennal joints, but differ in 
the absence of a distinct continuous lateral carina from the elytra. 
The vertically deflexed sides of the elytra form with the disk, in 
section, a distinct angle; but the carma is not apparent, except 
for a short distance from the shoulders. ~ 
I have adopted the name that the group bears in the rich 
collection of Mr. Alexander Fry. 
1. Tyrinthia capillata, n. sp. 
7’. elongata, setosa, nigra; capite fulvo-flavo, supra nigro, vitta late- 
rali fulvo-flava, inter antennas profunde indentato ; thorace utrin- 
que vitta laterali fulva ; elytris elongatis, juxta apicem angustatis, 
apice singulatim rotundatis et brevissime emarginatis, supra punc- 
tato-striatis, macula humerali cuneiformi vittaque lata mediana 
fulvis; antennis nigris, ultra medium annulo lato flavo, articulo 
tertio longissimo, ciliato. Long. 5 lin. ¢. 
Head coarsely punctured, forehead ¢onvex, mouth projecting, 
vertex deeply depressed between the bases of the antenne, tawny 
yellow, the crown and occiput and a stripe behind each eye 
black. Antennze as long as the body, black, with the apical 
half of the fourth, the whole of the fifth, and the base of the 
sixth joints yellow; basal joint elongate, gradually thickened 
and fringed with very long, fine hairs; third joint nearly as long 
as the whole of the succeeding joints taken together, not thick- 
ened, but furnished beneath with a continuous fringe of very 
long hairs; fourth joint not much longer than the fifth, and 
destitute of fringe. Thorax coarsely punctured, leaving smooth 
spaces on the disk, behind deeply impressed ; fulvous, with a 
broad central and lateral vitte black. Elytra linear, except very 
near the apex, where they are narrowed, the apex itself being 
9 4k 
~ 
