of anew Genus of Lamellicorn Beetles. 299 
The male has the head nearly flat and subtriangular, black 
above, and (except at the hind part) thickly covered with large but 
rather shallow punctures ; the clypeus is not separated from the 
crown of the head, it is armed in the middle with a conical tuber- 
cle, between which and the eyes (forming a triangle) are two other 
tubercles; the labrum is short, rather dilated, and rounded at the 
sides, with the fore margin emarginate; the mandibles are black, 
with the basal portion pitchy, they are broad, and almost square, 
with the outer anterior angle porrected ; behind this is a deep im- 
pression, serving to receive the basal joint of the antenne, which, 
as well as the palpi, are pitchy ; the clava with the extremity of 
its joints fulvous. The pronotum is fulvous, very glossy, and 
finely punctured, with a large, irregular, somewhat heart-shaped, 
dark pitchy patch in the middle, having a paler slender central 
line ; the hind margin of the pronotum is extended into a slender, 
glossy, castaneous horn, which follows the curve of the pronotum, 
so as to form an arch over the scutellum and base of the suture of 
the elytra, which are depressed for its reception. The elytra are 
of a dull luteo-fulvous colour, not glossy, except at the depressed 
basal part (which is of a blackish colour), and they are covered with 
numerous darker brown, small, and more or less confluent spots, 
the basal part and the apical margin being nearly free from spots. 
The depressed basal part forms, with the scutellum, nearly a semi- 
circle. The penultimate dorsal segment of the abdomen (which, 
as well as the last segment, is not covered by the elytra) is of a 
dull black colour, without visible punctures, but with a depressed 
transverse line near its base. ‘The anal segment is dark fulvous, 
also impunctate. The legs are luteo-fulvous, with pitchy tarsi, 
and with the fore tibiz pitchy on the inside; the spines of the 
tibiee are black. The underside of the body is dull luteous, 
clothed with pale hairs, and the head is pitchy, with the jugulum 
and mentum castaneous. 
The female is much darker coloured and smaller than the male. 
The head and pronotum black, the latter more strongly punc- 
tured; the two tubercles on the crown of the head are much less 
developed, forming in fact an almost continuous slight transverse 
carina; the front of the clypeus has, however, two distinct elevated 
tubercles. The mandibles are smaller than in the male, and the 
antennz more luteous-coloured. The scutellum is black, glossy, 
and punctured, this part of the body and the base of the elytra 
being of the normal structure. The elytra are of a reddish ches- 
nut colour, more glossy than in the male, punctured, and covered 
with small more or less confluent black spots. Each elytron ex- 
