J30 
315 . 
BRYAXIS SULCICOLLIS. 
Order Coleoptera. Fam. Pselaphidae Leach . — Dimera Lat. 
Type of the Genus , Staphylinus sanguineus Linn. 
Bryaxis Knock., Leach, Denny.-— Pselaphus Reich., Panz., Gyll. 
Antennae inserted on each side the nasus, straight and nearly as 
long or longer than the thorax, very pilose, 1 1 -jointed, basal 
joint robust ovate, considerably larger than the 7 following, which 
are either globose or oblong, the remainder forming a triarticu- 
late club, the 9th joint sometimes not larger than the 2nd, the 
10th large, transverse, 11th the largest, ovate-conic (6). 
Labrum pocket-shaped, producing two small teeth in the centre, 
angles rounded, furnished with a few long curved bristles (1). 
Mandibles broad at the base, and curved to the apex, which is 
very acute, with 3 teeth below on the inside, the internal margin 
very thin (2). 
Maxillae small, lower portion horny, quadrant-shaped, terminated 
by two pilose lobes, the lower one the smallest, subovate, the 
other maxillaeform. Palpi large and porrected, long, 4-jointed, 
basal joint very slender and minute, 2nd very long robust and 
clavate at the apex, 3rd robust subglobose, 4th very large, elon- 
gate-conic and pilose (3). 
Mentum elongate-ovate, truncated and dilated at the anterior 
margin, from the centre of which arise the Palpi, they divaricate 
and are probably triarticulate, the basal joint being very obscure, 
2nd long with a short bristle at the apex, 3rd like a short spine. 
Labium composed of 2 remote, membranous rounded lobes, ex- 
tending beyond the sides of the mentum (4). 
Head ovate-trigonate. Eyes rather small, lateral, and remote. Thorax 
obovate, truncated at the base. Scutellum minute. Wings, at least 
twice as long as the insect and without nermres, excepting 2 or 3 
short ones at the base; thickly punctured or pubescent, the inferior 
edge ciliated with long hairs. Elytra semioval, twice as broad as the 
thorax, but not covering more than half the Abdomen, which is con- 
vex, with the 2nd joint very large. Legs rather long, the anterior 
coxce sometimes mucronated. Tibiae, middle and hinder pair some- 
times curved, the former in some furnished with a large spine. Tarsi 
slender, posterior the longest, triarticulate, basal joint minute, 2nd 
and 3rd of equal length, the latter producing one Claw (5, a fore leg). 
Sulcicollis Reich. Mon. p. 62. 
Castaneous, shining, sparingly punctured and clothed with 
ochreous pubescence. Antennae as long as the thorax, very 
pilose, none of the joints elongated (fig. 6). Head subtrigonate, 
with a fovea on each side the crown, connected by a deep arched 
furrow. Eyes small and black. Thorax obovate, truncated be- 
hind, a deep groove down the centre, intersected towards the 
base by a curved channel, terminated on each side by a deep 
fovea. Elytra with the posterior angles notched and acuminated, 
an incurved longitudinal line on each side the suture, and an 
abbreviated one at the shoulder, forming a large and deep elon- 
gated fovea. Legs slightly obscure at the knees. 
