/ u 
d- /txb 
11 !). 
DEMETRIAS MONOSTIGMA. 
Order Coleoptera. Fam. Carabidse Lat., tikach. 
Type of the Genus Carabus atricapillus Linn. 
Demetrias Bonelli, Sam . — Rizophilus Leach . — Dromias Germ . — • 
Lebia Lat., Gyll . — Carabus Linn., Fab. 
Antennae inserted before the eyes at the base of the mandibles, 
gradually increasing in thickness to the apex, slightly pubescent, 
J 1 -jointed, basal joint the thickest, 2nd small, the following of 
nearly equal length, terminal joint as long as the 1st, nearly as 
robust and subovate (fig. 6). 
Labrum quadrate, slightly emarginate and ciliated (1). 
Mandibles slightly bent, acute, naked j one with a tooth at the 
base, the other with 3 at the base and one in the middle (2). 
Maxillae bent, horny and acute at the apex, ciliated with rigid 
bristles internally. 
Palpi 2, internal, compressed, 2-jointed, terminal joint short, 
subovate : external long robust, 4-jointed, 1 st joint short, 2nd 
long clavate, 3rd short, 4th elongate conic, terminated by a ve- 
sicle (3). 
Men turn transverse, sides lobed, centre obscurely bind. Palpi 
long, robust, fixed to a short scape, 1st joint subclavate, 2nd 
subovate, 3rd ventricose, elongate, ovate, terminated by a small 
vesicle. Labium slightly emarginate, membranous at the edges. 
(4). 
Head oval, narrowed and produced behind. Thorax cordiform, trun- 
cated before and behind, margined, not broader than the head. Ab- 
domen much broader than the thorax, depressed. Elytra elongated, 
not quite so long as the abdomen, and somewhat narrowed towards 
the base. Wings sometimes with rudiments only. Tibiae anterior 
notched. Tarsi 5 -join ted, basal joint the longest, especially in the 
hind legs, 4th joint large bilobed. Claws simple (5, afore leg). 
Obs. The dissections are made from D. monostigma. 
Monostigma Leach. — Sam. p. 156. — unipunctatus Germ. Ins. Spec, 
v. 1. p. 1. n. 2. 
Head black shining. Palpi pale. Mandibles and antennae fer- 
ruginous, the latter pale at the base. Thorax dull orange, chan- 
nelled down the middle, with an impression at the posterior an- 
gles. Elytra with 7 obscure striae on each ochraceous, with a 
large deep brown spot in the middle near their apex, which runs 
half way up the suture. Wings rudiments only. Abdomen ochra- 
ceous. Legs and underside, excepting the head, pale ochre. 
In the Author's and other Cabinets. 
