) 6')*33 
443 . 
CALLICERUS SPENCII. 
mi 
Order Coleoptera. Fam. Staphylinidae. 
Type of the Genus, Callicerus obscurus Grav. 
Callicerus Grav. — Aleochara Curt. 
Antennae inserted before the eyes, more than half the length of 
the insect, stout clavate pubescent, 11 -jointed, basal joint ovate, 
2nd as long subclavate, 3rd a little shorter, obovate-truncate, 
4th subglobose, the remainder remotely articulated, the 5 fol- 
lowing becoming more transverse, 10th large oblong, 11th very 
large, elliptic-ovate (6). 
Labrum exserted, coriaceous, pocket- shaped, furnished with a 
few bristles (1). 
Mandibles small narrow and curved, the apex forming a long 
tooth or claw, with a broad membranous margin on the inside 
( 2 ). . 
Maxillae small, forming two narrow lobes above, rounded and 
pubescent at the apex, the external one extending considerably 
beyond the other. Palpi capitate, 4-jointed, basal joint minute, 
2nd stout, subclavate, 3rd very large, ovate and pilose, 4th joint 
small conical and transparent (3). 
Mentum large, subtrigonate, truncate. Lip transverse, rounded, 
with 2 small lobes in the centre. Palpi arising from the an- 
terior angles of the lip, small, attenuated and composed of 3 
ohlong joints, basal one the stoutest, apical joint slender and 
rounded at the tip (4) . 
Head orbicular, narrowed before : eyes small lateral. Thorax larger 
and somewhat orbicular. Scutellum triangular. Elytra considerably 
broader than the thorax, subquadrate, the shoulders rounded, the pos- 
terior angles slightly uncinated. Wings ample. Abdomen half the 
length of the insect, narrower than the elytra, the sides margined. 
Legs slender. Coxae, anterior large, ovate. Thighs broad, attenuated 
to the apex. Tibiae slender and simple. Tarsi very slender , anterior 
rather the shortest, 5 -jointed, terminal joint a little the longest. 
Claws long and slender (5) . 
Obs. Callicerus Spencii was the species dissected. 
Spencii Kirby. — Curt. Guide, Gen. 221, 49. 
Dull black, excessively thickly and minutely punctured, and 
clothed with grey pubescence ; mouth ochreous brown, antennae 
lurid, excepting at the base, head slightly hollowed down the 
crown, with a small fovea between the eyes : thorax with a faint 
channel : elytra dull brown inclining to castaneous : abdomen 
shining, sparingly and obscurely punctured : legs ochreous, 
thighs piceous at the base. 
In the Cabinets of Mr. Holiday, Mr. Walker, and the Author. 
