107 
$ Apical abdominal segment with the dorsal plate lanceolate, 
the point prolonged and acute ; ventral plate simply truncated. 
Ega ; on dead branches in the forest. 
Genus TRiCHONiusf nov. gen. 
Body oblong, setose. Antennse about twice the length of the 
body in both sexes, furnished with numerous longish setae. 
Thorax broad, widening in a curved line from the front to the 
tips of the lateral spines, which form thick conical protuberances 
situated near to the hind angles. Elytra setose, not much nar- 
rowed behind, with their tips obtusely truncated or rounded. 
Legs stout, bristly ; thighs clavate ; tarsi much shorter than the 
tibiae, but the basal joint slender and elongated. Apical abdo- 
minal segment in d not elongated, with tips of both dorsal and 
ventral plates broadly rounded; in 2 slightly prolonged as a 
sheath to the very short ovipositor, which scarcely passes the 
tips of the elytra.; its dorsal plate flattened and rounded at the 
tip, its ventral plate truncated. 
In the shape of the thorax and setose clothing of the body and 
limbs this genus resembles Probatius and Oxathres. It differs 
from both in the obtuse apices of the ventral and dorsal plates 
of the terminal abdominal segment in both sexes. There is a 
somewhat close relationship between Trichonius and Baryssinus, 
but this latter genus is amply distinguished by its crested centro- 
basal tubercles. 
1. Trichonius quadrivittatus, n. sp. 
T. oblongus, subdepressus : thorace lato, cinereo, fusco quadrivittato : 
elytris apice obtuse breviter truncatis, cinereis, fusco multiffuttatis. 
Long. 3| lin. $ . 
Head brownish ashy, vertex with two fuscous dots. Antennse 
more than twice the length of the body, bristly both above and 
beneath, reddish, bases of the joints from the fourth pallid. 
Thorax short and broad; lateral spines conical, scarcely pointed, 
and placed very near to the hind angles ; surface smooth, 
brownish ashy, darker in the middle, and with four distinct 
dark-brown stripes, besides one less distinct on each side below 
the lateral spines. Elytra rather depressed, slightly narrowed 
behind, obliquely and very obtusely truncated at the tips, clothed 
with long bristles, which arise from punctures placed in rows 
independent of smaller punctures lying rather thickly towards 
the base; brownish ashy in colour, with a large number of 
small dark-brown spots which cover the setiferous punctures. 
Body beneath and legs dingy ashy, the latter bristly. 
Villa Nova ; on dead branches. 
M 2 
