LABUS. 51 



1. L. Sicheliaiius n. sp. (Fig. 20, 14a.)— Niger, gracilis, thorace 



elongatiusculo, antice eristato-marginato, superne crassiuscuje punctato; 



petiolo lineari-prismatico; 20 segmento basi subpedunculato ; capitis 

 maculis, pronoti margine antico, maculis 2 scutelli et 2 metanoti ab- 

 dominisque segmentorum marginibus, flavis. 



Total length, 11 mm.; wing, 8 mm. 



?. Antennae rather clubbed. Head quite orbicular, rather 

 swelled and rounded at the occiput, densely punctured; a little 

 carina between the antennae. Mandibles short truncate, armed 

 with three terminal teeth, tricarinate at end. Clypeus ovate, as 

 wide as long, a little truncate at tip, covered with coarse 

 punctures, substrigate. Ocelli disposed in an equilateral triangle. 

 Thorax a little depressed, flattened above, rather ovate (that is, 

 elongate), rounded posteriorly, a little contracted anteriorly, 

 truncate and margined with a crest; the angles of prothorax 

 salient. The thorax above strongly punctured, not so strongly 

 on the sides ; the metathorax a little shagreened ; the lateral 

 faces of this not punctured. Metathorax having its posterior face 

 vertical, somewhat truncate, triangular, but quite arcuate at the 

 summit, and margined by a little arcuate ridge, rough and obso- 

 lete ; the hind face parted by a depression and a little strigate in 

 the groove. Disk of mesothorax elongate, having two arcuate 

 furrows. Petiole elongate, quite linear; only its base filiform; 

 the rest depressed and compressed, making it prismatic, with a 

 dorsal, two lateral faces and an inferior face ; the faces having 

 scattered punctures ; the superior one not parted by a furrow, 

 but with a round impression before the border ; the inferior one 

 carinated; the lateral faces having the margin a little salient 

 because of their compression; the compression being more 

 sensible behind the middle of petiole, so that the anterior part of 

 the swelled portion is a little wider than the rest and a little 

 ovate. The rest of the abdomen nearly impunctate ; the second 

 segment globular, but its base a little funnel-shaped and articu- 

 late by a very short neck as in the Zethusculus. Anterior tibia) 

 very short. 



Black, with short, gray pile. Antennae a little ferruginous at 

 the extremity beneath; a. spot in the middle o( the mandibles, a 

 line on the scape, a spot, ow each side oi' clypeus, two dots over 

 the insertion o( the antenme, and one in the sinus of each eye. 



