44 Mr. H. W. Bates on the Longicom Coleoptera 



Trypanidius in facies, has some affinity with LeptostT/Ius. We 

 are therefore, after pursuing the line of affinities which leads 

 through a series of depressed forms of Leiopodinae from Alcidion 

 to Par (ecus, 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 thoi-ax, 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. Antennae stout, one and a half times the 

 length of the body ( S ), 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 ashy 

 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 fasciae 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, n. sp. 



B. oblongus, rufescenti-brunneus, cano fuscoque variegatus : thorace 

 nigro bivittato : elytris apice breviter obtuse truncatis, pone me- 

 dium vittis duabus abbreviatis nigris. Long. 4^ lin. $ . 



Head ash-coloured. Antennae twice the length of the body ( $ ), 

 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 



