S-nzt 
196 . 
PTEROSTICHUS ELONGATUS. 
^3 
Order Coleoptera. Fam. Carabidae Lat. 
Type of the Genus Carabus fasciato-punctatus Fab. 
Pterostichus Bon., Lat., Sturm. Dej . — Harpalus Lat . — Carabus 
Fab., Marsh. 
Antenna inserted before the eyes at the base of the mandibles, 
1 1 -jointed, pubescent excepting the 3 first joints, basal joint ra- 
ther robust oblong, 2nd small, 3rd and 4th clavate, shorter than 
the remainder which are compressed and carinated on both sides, 
the terminal one conical (fig. 6). 
Labrum transverse quadrate, anterior angles rounded, fringed 
with short bristles, anterior margin slightly concave producing 
long bristles (1). 
Mandibles porrected, bent, acute, crenated towards the base, one 
producing a tooth near the middle, the other, one belcw the 
middle (2). 
Maxilla rather long, slender, very much hooked and acute, ci- 
liated with strong bristles internally. Palpi; internal rather 
long, biarticulate, 2nd joint rather bent : external 4-jointed, ba- 
sal-joint short slender, 2nd and 3rd long of equal length, the 
former robust, the latter clavate, 4th considerably shorter, elon- 
gate ovate truncate (3). 
Mentum transverse, deeply emarginate, producing a long and 
sharply notched lobe in the centre. Labium quadrate, 2 bristles 
arising from the centre and 2 narrow lobes from the sides. Palpi 
rather robust, arising from scapes, 3-jointed, basal joint small, 
2nd and 3rd of nearly equal length, the former clavate, the lat- 
ter subfusiform truncate (4). 
Head oblong. Eyes small. Thorax subcordate, truncate before and 
behind. Body depressed. Scutellum small triangular. Elytra emar- 
ginate at the apex . Wings 2. Tibiae spurred , anterior emarginate. 
Tarsi 5 -jointed, anterior dilated in the males, especially the 3 first 
joints , which are cordiform, terminal one elongate- clavate. Claws 
simple (5, fore leg of a male). 
Obs. The dissections and description were made from Carabus macer 
Marsh. 
Elongatus Samouelle's MSS. 
Black shining. Head ovate. Eyes small. Antennae fuscous, ex- 
cept at the base. Thorax very much narrowed behind, a chan- 
nel down the centre and a strong impression near the poste- 
rior angles. Elytra with 8 striae on each, the sutural one fur- 
cate at the base, the 2nd stria with 4 strong impressions com- 
mencing near the middle, the 3rd with one nearer the base, and 
the 8th with strong punctures the whole length. Claws and apex 
of Palpi ferruginous. 
In the Cabinet of the British Museum. 
