4A Mr. H. W. Bates on the Longicorn Coleoptera 
Trypanidius in facies, has some affinity with Leptostylus. We 
are therefore, after pursuing the line of affinities which leads 
through a series of depressed forms of Leiopodinz from Alezdion 
to Parecus, brought back again to the starting-point,—the pre- 
sent genus commencing a‘suite of genera of more convex form 
of body. The presence of hairy-crested centro-basal ridges or 
tubercles distinguishes Baryssinus from all the genera which 
follow, whilst the existence of a prominent ovipositor in the 
females, and the shape of the thorax, with the position of its 
lateral spines, separate it from Leptostylus and the allied groups. 
1. Baryssinus penicillatus, n. sp. 
B. oblongus, cinereo-brunneus, fusco obscure variegatus: thoracis 
dorso antice tumido: elytris utrinque tricostatis, apice rotundatis. 
Long. 4 lin. C. . 
Head ash-coloured. Antennz stout, one and a half times the 
length of the body (d¢), stout, setose beneath, ashy testaceous, 
tips of the joints (from the third) dusky. Thorax with the an- 
terior part of its disk rising into a large obtusely conical eleva- 
tion; lateral spines stout and curving posteriorly ; surface ash 
brown, with indistinct darker brown markings. Elytra oblong- 
quadrate, being but slightly narrowed to the tips, which are 
broadly rounded ; the disk of each has three faintly marked ribs 
which do not, reach either the base or the apex; centro-basal 
tubercles each with a thin pencil of black hairs; surface, to the 
tips, covered with largish punctures, ashy brown, with blackish- 
brown markings, which form two fasciz beyond the middle, the 
anterior one oblique, the posterior one forming a curve on each 
elytron. Body beneath ashy. Legs pale reddish, clothed with 
tomentum, which forms rings alternately of an ashy and brown 
hue. 
Beaten from dead branches; woods near Santarem. 
2. Baryssinus bilineatus, un, sp. 
B. oblongus, rufescenti-brunneus, cano fuscoque variegatus: thorace 
nigro bivittato: elytris apice breviter obtuse truncatis, pone me- 
dium vittis duabus abbreviatis nigris. Long. 43 lin. 9. 
Head ash-coloured. Antenne twice the length of the body( 2), 
setose beneath, ashy reddish, with the tips of the joints (including 
the first) blackish. Thorax regularly and moderately convex ; 
hind margin with a single row of punctures; surface smooth, 
and ornamented with two blackish stripes, a line of the same 
colour also encircling (above) the bases of the lateral tubercles. 
Elytra oblong, very slightly narrowed to the tips, which appear 
rounded, but are seen, on close examination, to be obtusely 
truncate ; surface free from raised lines, with the exception of 
