243 
length of these organs ; they are, besides, thickened and densely 
hirsute, sometimes ciliated. Both genera have a strongly ele- 
vated lateral carina, bifid claws, and very narrow prosternum. The 
elytra in Hemilophus are sometimes a little dilated before the 
apex, but in Amphionycha never show any trace of dilatation. 
Hemilophus fasciatuSy n. sp. 
H. elongatus, sublinearis, ante apicem paulo ampliatus ; capite fulvo, 
vitta lateral! maculaque triangular! occipitali nigris ; thorace nigro, 
vitta utrinque lateral! fulva ; elytris nigris, macula cuneiform! hu- 
merali fasciaque recta mediana fulvis ; antennis nigris, articulo 
quinto basi rufo, articulis quarto et quinto paulo incrassatis, dense 
breviter setosis. Long. 5 lin. (S . 
Head tawny yellow, with a triangular spot on the occiput and 
a stripe behind each eye black ; forehead convex and marked 
with a deeply impressed line. Antennse a little longer than the 
body ( ); black, with the base of the fifth joint reddish; basal 
joint clothed with longish hairs ; third and fourth joints together 
longer than the whole of the following joints, thickened, linear, 
densely clothed with short hairs; remaining joints clothed spa- 
ringly with very short hairs. Thorax coarsely punctured, leav- 
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, pointed 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. 
Ega. 
Genus Tyrinthia, 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 carina 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 capillataj n. sp. 
T. elongata, setosa, nigra ; capite fulvo-flavo, supra nigro, vitta late- 
