428 Records of the Indian Museum. [VoL. XI, 
The Burmese specimens of these beetles were found in the 
interior of two pieces of hard dry wood by the road-side. In 
one piece—that found on the eastern side of the hills—they were 
accompanied by larvae. 
¢. Short and stout like N. obesus. Black, 13°0-21°5 mm. 
long. The long curved dorsal tooth of the mandibles is about as 
long as the part of the mandible in front of it. Its posterior 
margin bears a rounded laminar tooth which is sharper in small 
than in large specimens. The apex of both mandibles is tridentate, 
but the lowest tooth is rudimentary on the right side The labrum 
is glossy; its anterior margin is concave and its anterior angles are 
laterally produced and acute; the clypeus forms a transversely 
linear convexity above its whole basal width, and is bounded 
behind by a groove from which a row of erect hairs project in un- 
worn specimens. 
The anterior margin of the frons is convex in the middle. 
The upper surface of the head is flattened as a whole, and slightly 
undulating ; its anterior part is always glossy, but its posterior part 
may be dull; its punctures are much finer in front than they are 
behind, where each is broad and flat with a raised ring in the centre. 
The canthus is abruptly constricted on the outer side about 
the middle of its length; the posterior part is broader and more 
convex than the anterior. It is coarsely and very closely punc- 
tured. The mentum is closely and very coarsely punctured ; it is 
slightly wider in front than behind and distinctly wider than long ; 
the anterior angles are rounded and the anterior margin is concave. 
The pronotum is more than twice as broad as long; it is 
strongly convex across the middle in front. Its surface is glossy ; 
it is coarsely punctured at the sides, along the anterior and posterior 
margins and in the median groove which does not nearly reach the 
anterior margin. The anterior margin is lightly concave on either 
side of a broad median convexity, the other margins are convex 
as a whole, but the anterior part of the narrow reflexed border is 
widened. In large specimens this widening is very abrupt (see 
pl. xxix, fig. 7). 
The grooves of the elytra each contain one row of large 
shallow punctutes, except the last, which contains about three such 
rows ; and there is a row of fine punctures on each side of each of 
the somewhat narrow ridges between them. 
All the sterna are somewhat coarsely punctured ; the proster- 
num is lightly keeled between the coxae and descends gradually to 
the level of the mesosternum behind them. The metasternum has 
a median groove. 
The basal piece of the genital tube is simple, and does not 
overlap the median lobe; it is not chitinized in the middle line 
above. The lateral lobes are very slightly concave on their inner 
sides. The median lobe is cylindrical and is deeply bifid. The 
internal sac is laminar, elongate and parallel-sided. It is sup- 
ported by a pair of strongly chitinized laminae of which one lies 
on either side of the ductus ejaculatorius in the tissues of the sac. 
