REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 253 
men with the last three segments margined with a fine lateral furrow; the tip is rounded, 
not serrate. Prosternum triangular, broad, grossly punctured: metasternum deeply 
emarginate. Tibize not visible. 
D. 
8. B. purpurea, brevis triangularis, nigra, capite subtilius canaliculato, thorace versus angulos posticos vage 
punctato vix depresso, elytris nigro-cyaneis, lateribus antice fortiter impressis, antice seriatim punctatis, fascia 
postica obliqua guttisque nonnullis albo-pilosis. Long. -14. 
Metonius purpureus Say, Trans. Am. Phil. Soc. 6, 164. 
Brachys americana Gory, Mon. Bupr. 4, 346, tab. 58, f. 343. 
Middle and Western States; rare. In this and the next species the scutellum is very 
large, the prosternum very broad, almost truncate behind, the tibize flattened and dilated, 
and the entire abdomen surrounded with a deep marginal groove: the tip is rounded, not 
serrate. 
9. B. levigata, late ovata, nigra, capite grosse parce punctato, canaliculato, thorace lateribus postice subito 
depressis obsolete punctatis, elytris lateribus antice valde impressis, antice fere irregulariter punctatis. Long. 
-10—-12. 
Trachys ovata||Say, Aun. Lyc. Nat. Hist. New York, 1, 252. 
Trachys levigata Say, Trans. Am. Phil. Soc. 6, 164. 
Metonius ovatus Say, Trans. Am. Phil. Soc. 6, 164. 
Brachys punctata Gory, Mon. Bupr. 4, 347, tab. 59, f. 344. 
Middle and Southern States to Kansas. Not so broad as the preceding, less attenuated 
behind, with the sides of the elytra more rounded. 
GROUP VIII. 
I have placed in a separate group a very small species, which differs by many charac- 
ters detailed below from those which precede. The body is cylindrical, the antenne in- 
serted in large cavities, by which the epistoma is narrowed, but does not enlarge again 
distinctly in front as in the three preceding groups. The mouth is inferior, not applied 
to the prosternum; the front is vertical, slightly convex; the mentum large, corneous, tri- 
angular. The prosternum is broad, truncate both before and behind: the mesosternum 
not visible. The scutellum is triangular and small. The thorax is truncate at base. The 
legs are not contractile, the tarsi moderately short, with the membranous lobes large; the 
ungues are broadly toothed. 
Hapuostetuus Lec. 
Antenne liberz, foveis inserte, articulis 1 et 3 crassis, 3i0 angusto; 4—10 triangularibus, 11mo ovali, capite 
thoraceque haud breviores. Caput rotundatum, ore inferno, labro trangverso, palpis brevibus crassiusculis, mento 
magno triangulari toto corneo, sub oculos late suleatum. Thorax transversus, conyexus, basi truncatus, lateribus 
rotundatis, margine laterali duplici, subtus haud sulcatus: prosternum latum, antice posticeque truncatum. Me- 
sosternum haud conspicuum; metasternum prosterno arcte applicatum. Elytra thorace angustiora cylindrica, 
