OOLEOPTERAi 
97 
which has a deep longitudinal channel. Antennal groove apical, its base 
sublinear, longitudinal or parallel to the rostrum, short and shallow, 
its terminal part widely evanescent, obliquely impressed behind the 
pterygium. 
Thorax oblong, base subtruncate, very obtusely produced in the 
middle, sides slightly dilated from the base to the middle, then roundly 
obliquely narrowed to the apex, which is at least one-half narrower 
than the base; apex truncate-subemarginate above, very obliquely trun¬ 
cated at the sides, subsemicircularly emarginate beneath; upper part 
longitudinally convex, or rather subgibbous in the middle, and ob¬ 
liquely attenuated from thence in a nearly straight line with the head 
and rostrum, so as to describe, with the horizontal line of the elytra 
and posterior part of the thorax, an angle of about 45® ; the under part is 
straight, horizontal, like the posterior upper part and the elytra, so that it 
is diminished to more than half the thickness at the apex; disc depressed 
along the middle, with a median ridge obsolete at the base and tip, and a 
dorsal elevation on each side of the depression, convex, rugose; sides finely, 
under part evidently, rugose; clothed with a fulvescent grayish pile, more 
condensed at the sides, and especially in a lateral line on the disc, forming 
a lateral margin, and attaining inwards to the dorsal elevation, which 
is denudate as well as the median ridge. Posterior carina as described in 
the generic characters. 
Scutellum scarcely transverse, ovate-subquadrate, densely clothed with 
fulvous pile. 
Elytra oblong-subquadrate; base conjointly sinuately subemarginate’ 
obliquely dilated from the angles of the thorax to the shoulders, which 
are rounded and callose ; sides exactly straight near to the apical declivity 
and tubercles, where they are abruptly narrowed or very obtusely rounded; 
transversely convex ; inflected margin sinuate, slightly roundly dilated 
behind the base, emarginate near the middle; longitudinally and obliquely 
elevated behind the base, then nearly straight, scarcely convex to five-sixths 
of their length, then very slightly attenuated to the ante-apical tubercles, 
but subperpendicularly truncated behind them ; punctate-striate, the 
punctures approximating, rather deep and large, especially near the base; 
interstices convex, rather narrow, obsoletely and finely rugulose, intra- 
sutural and 2nd elevated at the base, forming on each elytron with 
the shoulder three basal elevations between which the remaining areas are 
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