534 . 
EMUS HIRTUS. 
Order Coleoptera. Fam. Staphylinidse. 
Type of the Genus, Staphylinus hirtus Linn. 
Emus Lea., Dej., Curt. — Staphylinus Linn., fyc. 
Antenna inserted near the base of the labrum, remote from the 
eyes, a little longer than the head, geniculated and slightly 
clavate, pubescent and 11 -jointed, basal joint long, 2nd short, 
3rd longer, both clavate, the remainder remotely articulate, 4th 
and 5 th globose, the following transverse, somewhat bowl-shaped, 
being most produced on the inside, the terminal joint suborbi- 
cular, hollowed at the apex and a little acuminated (6). 
Labrum broad and short, deeply cleft in the centre, densely 
ciliated, leathery, with a corneous space on each side at the 
base, producing long hairs (1). 
Mandibles crossing, very long, stout and curved, deeply notched 
on the inside below the middle, with a pubescent lobe on the 
inside, the internal margin concave and more or less notched 
above, the apex attenuated and acute (2). 
Maxilla with a long internal lobe, densely pubescent and ciliated, 
a smaller articulated lobe at the apex, ovate curved and densely 
pubescent outside, with a few bristles. Palpi 4-jointed, basal 
joint small, curved, 2nd and 3rd nearly of equal length, clavate 
and producing long bristles, the former a little the stoutest, 4th 
shorter, slender and cylindric (3). 
Mentum transverse-ovate, submembranous, with a bundle of 
bristles on each side. Labium elongated, the centre notched, 
sides spreading and produced, forming two very pubescent lobes. 
Palpi attached beyond the middle to 2 small scapes, composed 
of 3 nearly equal joints, basal joint clavate with a single bristle 
on the inside, 2nd stouter and ovate, with very strong bristles 
on the inside, some curved, 3rd a little the longest and slenderest, 
fusiform-truncate (4). 
Head as broad as the thorax : eyes not large or prominent, placed on 
each side the anterior angles ; neck distinct. Thorax semiovate, 
being truncated before : scutellum somewhat trigonate. Elytra 
broader than the thorax, depressed, nearly quadrate, the angles 
rounded: wings ample. Abdomen a little narrower and longer 
than the elytra, margined, ovate at the apex. Legs stout : anterior 
coxae large ; posterior trochanters producing a spine, sometimes 
very large, twisted and truncated obliquely ( t ) .* tibiae, anterior with 
short spines outside, the apex regularly spined in all, with unequal 
spurs in the 4 posterior : tarsi short, anterior dilated (5), cushioned 
beneath, 5 -jointed, 3 first joints sublunate, 4th smaller and subcor- 
date ; 5th clavate ; in the others the basal joint is as long as the ter- 
minal one : Claws strong (f, hind leg ) . 
Hirtus Linn. — Curt. Guide, Gen. 185. 1. — bombylius DeG. 
In the Author s and other Cabinets. 
