COLEOPTEKA. 
425 
and is also found in the earth. It even appears that the larvae of the 
E. striatus. Fab., attack the roots of the Wheat, and, where they 
exist in great numbers, do much injury to it. 
The stomach of the Elaterides is long, transversely rugose, and 
its posterior portion sometimes inflated ; their intestine is moderate. 
The various subgenera of this tribe may be referred to two prin- 
cipal divisions. Those where the antennae can be entirely received 
into the inferior cavities of the thorax constitute the first.' 
Sometimes they are rcceived, on each side, into a longitudinal 
groove, situated directly under the lateral edges of the thorax, and 
are always filiform and simply serrated. The joints of the tarsi are 
always entire, without inolongations, and in the form of a palette 
underneath. The thorax is convex or arched, at least on the sides, 
and dilates at the posterior angles in the manner of a lobe, pointed 
or triangular. These Insects approach the Buprestides. 
Galba, Lat. 
Mandibles terminating in a simple point; maxillae unilobulate 
last joint of the palpi globufar ; the body almost cylindrical 
Eucnemis, Arh. 
Mandibles bifid ; maxillae bilobate ; last joint of the palpi nearly 
securiform, and the body almost elliptical f . 
At other times the antennae, occasionally clavate, are received, at 
least partially, either into the longitudinal grooves of the lateral 
borders of the praesternum, or into fossulae situated under the pos- 
terior angles of the thorax. The tarsi are frequently provided with 
little palettes formed by the prolongation of the inferior pellets, or 
the penultimate joint is bifid. 
Some, with filiform antennae, have the joints of the tarsi entire 
and Avithout palettes underneath ; the anterior legs, when contracted, 
are received into lateral cavities in the inferior surface of the thorax. 
Such is the 
Adelocera, Lat X. 
Others, with antennae also of equal thickness throughout, have 
the joints of the tarsi entire, but the inferior pellets prolonged or 
projecting in the manner of little palettes or lobes. Their head is 
exposed. They form the 
* I have seen three species, all from Brazil. One of them has many points of re- 
semblance to the Melasis tuberculata, Dalman — Anal. Entom. The maxillae termi- 
nate in a very small and pointed lobe. 
-f- Count Mannerheim has published a splendid Monograph of this subgenus, an 
extract from -which, with the plates, is found in the third volume of the Annales des 
Scienees Naturelles, accompanied by some observations from myself on the too great 
extent given to the subgenus by that author. The species he calls the capucinus is in 
my opinion the only one that belongs to it, and such was the original idea of him 
who established it. 
II Elater ovalis, Germ. ; — Elater fuscus, Fab., and some others from the East 
Indies, collected there by M. de Labillardidre. 
