34 
184 . 
CALATHUS LATUS. 
Order Coleoptera. Fam. Carabidse Lat Leach. 
Type of the Genus Carabus cisteloides III. 
Calathus Bon., Panz., Leach, Lat., Dej., Sturm. — Harpalus Lat . — - 
Carabus Linn., Fab., Marsh . 
Antennae inserted before the eyes at the base of the mandibles,, 
filiform, composed of 11 joints of nearly equal length, excepting 
the 2nd, which is scarcely more than half the length of the 1st •, 
3 first joints naked, the remainder pubescent, terminal joint 
elongate-ovate (fig. 6). 
Labrum transverse -quadrate, slightly narrowed and emarginate 
before and ciliated with a few bristles, anterior angles rounded (1). 
Mandibles slightly bent, acute, crenated near the base, one 
having a tooth near the middle on the internal side $ the other, 
one nearer the base (2). 
Maxillae small, bent, acute, ciliated with bristles internally. 
Palpi ; internal extending rather beyond the apex of the maxillae, 
biarticulate, basal joint clavate, terminal one bent $ external long 
4-jointed, basal joint minute, remainder nearly of equal length, 
2nd joint the most robust, 3rd clavate, 4th cylindric truncated (3). 
Mentum semiorbicular, deeply emarginate, producing a bifid lobe 
in the centre. Lip rather long and rounded, producing a few 
bristles. Palpi long, arising from scapes, 3-jointed, basal joint 
minute, 2nd and 3rd large of nearly equal length, slightly cla- 
vate, the former having a few bristles, the latter truncated (4). 
Head subtrigonate small. Eyes small. Thorax trapeziform, depressed , 
twice as broad as the head. Scutellum minute, triangular. Cole- 
optra elliptic. Wings, generally rudiments only. Legs, hinder pair 
rather the longest. Tibiae, anterior emarginate. Tarsi, anterior 
pair in the males with the 3 first joints dilated , the 2nd being the 
largest. Claws serrated (5, afore leg of the male). 
Latus Dejean . — -frigidus Fab. Syst. Eleut. ? 
Black shining. Head small. Thorax twice as broad as the head, 
lateral margins ferruginous, a shallow fovea on each side towards 
the base, where it is punctured and a channel down the middle. 
Elytra dull black, much broader than the thorax, especially to- 
wards the middle, with 9 minutely punctured striae on each, the 
1st abbreviated, the 4th and 6th having about 10 strong punc- 
tures on each, and the 9th marked with a row of stronger im- 
pressions. Palpi and antennae ferruginous inclining to casta- 
neous, the basal joint of the latter being the palest. Legs pi- 
ceous inclining to black. 
In the Cabinet of the British Museum. 
