S'- 
227 . 
ODACANTHA MELANURA. 
// 
Order Coleoptera. Fam. Carabidse Lat., Leach. 
Type of the Genus Attelabus melanurus Linn. 
Odacantha Payk., Fab., Bonel ., Clairv., Gyll., Dej. — Carabus Oliv., 
Sower. — -Attelabus Linn., Don. — Cicindela ? Panz. 
Antennce inserted before the eyes at the base of the mandibles, 
rather long slender and filiform, pubescent except at the base, 
11 -jointed, basal joint ovate robust, 2nd minute, 3rd and re- 
mainder as long as the 1st, gradually increasing in size to the 
last which is attenuated (6). 
Labrum transverse -quadrate, slightly concave before, with a few 
short and long bristles, the angles rounded (1). 
Mandibles porrected, small and slender, slightly curved and 
acute, sinuated towards the base, one having a small tooth above 
the middle (2). 
Maxillce curved and acute, the internal edge furnished with bent 
teeth and hairs. 
Palpi, internal robust, biarticulate, basal joint longer than the 
2nd which is subovate 5 external 4-jointed, basal joint minute, 
2nd robust, subovate, 3rd shorter, clavate, 4th longer fusiform 
with a vesicle at the apex '( 3 ). 
Mentum transverse, emarginate, the centre producing an obtuse 
triangular tooth, the lobes on each side dentated. Labium long 
quadrate, producing 2 long bristles in the centre and a slender 
lobe on each side. Palpi robust, attached to long scapes, tri- 
articulate, basal joint small, 2nd long clavate, 3rd a little longer 
subfusiform terminated by a vesicle (4) . 
Head much broader than the thorax, ovate having a short neck. Eyes 
prominent. Thorax slender cylindric. Scutellum minute. Elytra 
shorter than the abdomen, depressed , twice as broad as the thorax, 
rather narrowed towards the base and truncated at the extremity, 
the angles rounded. Wings ample. Legs long. Thighs robust. 
Tibiae spurred, anterior emarginate. Tarsi 5 -jointed, penultimate 
joint cordate, terminal joint the longest. Claws long and bent (5, a 
fore leg) . 
Melanura Linn. Syst. Nat. 1.2. p. 620. n. 6. — angustatus Fab., 
Oliv., Sow. 
Smooth shining, ochreous orange, mandibles castaneous. An- 
tennae black, excepting the 3 basal joints. Head and thorax 
green, the latter sparingly, but strongly punctured, with a 
channel down the centre and a lateral carina. Elytra with a 
large oval cyaneous black spot at the apex, each having an ab- 
breviated line of minute punctures next the suture and 7 ex- 
tending the whole length 5 between the 3rd and 4th are 3 fovese 
and another between the 6th and 7th. Abdomen piceous above, 
green beneath. Thighs and tarsi black at their apex. 
In the Author's and other Cabinets. 
