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762 . 
TACHYPORUS LITTOREUS. 
Order Coleoptera. Fam. Staphylinidae. 
Type of the Genus, Tachyporus pubescens Gyll. 
Tachyporus Grav., Gyll., Eric., Curt. — Conurus Step. — Oxyporus 
Fab. — Staphylinus Linn. 
Antennce inserted at the base of the labrum close to the eyes, 
longer than the head and thorax, clavate, pubescent, bristly and 
1 1 -jointed, basal joint the longest, stout, curved at the base, 2nd 
elliptic, a little shorter and stouter than the 2 following, which 
are a little thickened at the apex, 5th and 6th shorter and 
stouter, obovate- truncate, the remainder moniliform, subturbi- 
nate, apical joint the stoutest and longer than the preceding, 
the tip subacuminated (6). 
Labrum exserted, semiorbicular, bristly, the centre slightly 
notched and ciliated (1). 
Mandibles rather small, subtrigonate, the apex forming an acute 
claw (2). 
Maxillce small, terminated by an ovate ciliated lobe, with a nar- 
row and sublanceolate one inside, densely ciliated. Palpi short, 
hairy, subulate, 4-jointed, basal joint small, 2nd stout, obovate- 
trigonate, 3rd larger, obovate, 4th slender, subulate (3). 
Mentum rather large, semiorbicular. Lip broad, forming a 
band at the base, the apex dilated, slightly notched in the 
middle, with a few rigid bristles. Palpi short, divaricating, at- 
tached to short scapes at the margin of the band, triarticulate, 
tapering, basal joint short, 2nd smaller, 3rd the smallest, all 
subovate (4). 
Head nutant, ovate -trig onate : eyes lateral and close to the Thorax, 
which is large, convex and ovate, broad and truncated at the base, 
angles rounded: scutel triangular. Elytra truncated, quadrate or 
oblong, as long or a little longer, but sometimes scarcely so broad as 
the thorax, and a little attenuated: wings very ample. Abdomen 
twice as long as the elytra, but narrower and tapering, the apex pro- 
ducing a few long bristles. Legs compressed, anterior the shortest, 
hinder a little the longest : coxae, anterior large : thighs, anterior 
dilated, except at the apex, hinder the slenderest : tibiae, anterior 
clavate, with a spine at the apex, and a bristle near the middle, the 
others longer and spurred, the spurs very small in the hinder, with 
a few bristles about the middle, strongest in the intermediate : tarsi 
5-jointed, anterior short, 4 basal joints cushioned beneath, obcordate, 
incrassated in the male, 5th long and slender, the others slender and 
rather long, especially the hinder, basal joint the longest, 4th the 
v shortest : claws very slender. 
Littoreus Linn. — cellaris Fab. — Curt . Guide, Gen. 203. 4. 
Piceous, with greyish pubescence : thorax more or less ferrugi- 
nous-brown, posterior angles ochreous : elytra oblong with a 
large ochreous oblique humeral macula : margins of abdominal 
segments subferruginous : antennae and legs ferruginous, the 
former darkest in the middle. 
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