403 
badly the form of this part as seen in Lobobrachus. The man- 
dibles are very short, the labrum large with rounded front, or 
rather not in the least emarginate but nearly straight in the 
middle the lateral angles rounded. The ligula is broad, with 
rounded front margin, and the paraglossae do not reach its 
extremity; the lateral lobes of the mentum are short and the 
median lobe is formed chiefly by a development of the margin. 
There are no hairs on the prosternal process. The number of 
setae on the thorax, viz. three on each side, is very unusual 
in the Pterostichini, where the normal number is two, one at 
the hind angle and one some little distance in front of the 
middle; in Lobobrachus there is one at the hind angle, one 
a little behind the middle, and one about midway between this 
and the front margin. In other respects the structure differs 
but little frojn that of Pterostichus. 
The genus on account of the structure of the palpi, the 
large stature of the individuals, the beautiful sculpture of the 
wingcases and the metallic coulour is entitled to be placed at 
the head of the Pterostichini. 
Lobobrachus Lacerdae. 
Oblongus, supra subplanatus, niger capite pronotoque 
viridi-cyaneis, elytris cupreis, striatis, interstitiis alternis 
magis elevatis, striis crebrius regulariter subtiliter punctatis. 
Long. 25 millim. — Hab. Bahia, Dom. Lacerda, 
Head with the clypeal suture rather deep, and a deep 
impression on each side between the eyes. Thorax a little 
broader than long, curved at the sides and a little narrowed 
and sinuate behind, the hind angles rectangular, with a deep 
central channel nearly reaching the front and hind angles, and 
an elongate and deep basal impression on each side, extending 
nearly half the bugth and a little nearer to the side than to 
the middle. Scutellum broad and short, brassy. Elytra of a 
copper colour, the sutural and alternate interstices much ele¬ 
vated, and rather broader than the others, the striae marked 
with closely placed punctures, the interstice near the epipleura 
dull and marked adjacent to the inner stria, with a series of 
punctures, there is no supplementary scutellar stria, but the 
sutural stria is deepened, or foveate at the base. The under- 
surface and legs black, the epipleurae dull green. 
As a curiosity in the Pterostichini I may remark that each 
of the two examples before me has the peculiarity of possessing 
on the right wing-case only — not on the left — a single 
puncture on the third interstice near the middle. 
St«tt. entomol. Zeit. 1885. 
26 ^ 
