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Tribe VI. —Aleociiarides. 
The antennae inserted between the eyes, opposite their internal margin, but 
not beneath the lateral margins of the head; the labrum entire, truncated; the 
terminal joint of the maxillary palpi conical or subulate ; the head either concealed 
or with a distinct neck ; the abdomen, in the living insect, extended lengthwise ; 
the legs unarmed or spinose in a very few ; the tarsi pentamerous. 
i. The maxillary palpi elongate, the terminal joint conical and acute. 
a. The antennae incrassated in the middle, with the first joint slightly the 
largest. 
Genus I. —Dinarda, Leach, dentata. 1. 
b. The antennae slender towards the extremity, subsetaceous, the first joint 
very robust, the apex emarginate. 
Genus II. —Lomechusa, Grav. strumosa, paradoxa, emarginata. 3. 
ii. The maxillary palpi short, the terminal joint subulate. 
a. The antennae filiform, not geniculated, the joints equal; the mouth form¬ 
ing a rostrum ; the four anterior tibiae spinose. 
Genus III. —Gymnusa, Karsten . brevicollis, dubia. 2. 
b. The antennae geniculated at the base, thickened towards the extremity ; 
the mouth not rostrated ; the tibiae hirsute or pubescent, not spinose. 
1. The head more or less withdrawn beneath the thorax ; the body pos¬ 
teriorly more or less attenuate ; the anterior angles of the thorax 
muchdepressed. 
a. The antennae short, more or less thickened in the middle, the third 
joint more than twice as long as the second ; the body generally 
robust; the thorax convex, narrower than the elytra; the elytra 
often very short; the legs hirsute ; the first joint of the tarsi 
slightly the longest. 
Genus IV.-— Aleochara, Auct. fuscipes, tristis, bipunctata, intricata, 
carnivora, mserens, haemorrhoidalis, lanuginosa, villosa, fumata, laevigata, brevi- 
pennis, pulla, nitida, bilineata, morion, exigua. 17. 
The antennae short, slightly thickened towards the extremity, all the 
joints equal, the terminal one only the largest and oblongo-ovate; 
the body elongate and tapering; the thorax broader than the 
elytra, laterally rotundate and deflexed; the legs pubescent, the joints 
of the tarsi equal. 
Genus V. —Sphenoma, Mann, abdominale. 1. 
y. The antennae somewhat longer, slightly thickened towards the apex, 
the second and third joints nearly equal; the body narrowed pos¬ 
teriorly ; the elytra of about the width of the thorax; the legs 
pubescent, the first joint of the tarsi a little longer than the following. 
