Memoirs on the coleoptera

9O
MEMOIRS ON THE COLEOPTERA
impressed basal lobe, strongly, densely, muricately sculptured as a
rule and subequal in width to the elytra, sometimes broader and
occasionally narrower, especially in the female, the elytra sinuate
at base, very roughly and unevenly sculptured and with minute
granuliferous punctures scattered irregularly over the surface, be-
coming a little more pronounced near the side margins, which are
acute, gradually rounding inward behind and extending to the
apical angles; the inflexed sides, or epi pleura, are very narrow for
the present tribe. The head is moderate, the epistoma somewhat
subangularly sinuate and the labrum feebly sinuate medially.
The mentum is transverse, contiguous to the sides of the buccal
cavity, resting upon a very short and broad gular pedestal, the
open cavities at the sides of which are very small ; the apex
is distant
from the closed mandibles, as in all normal Asidids, and has the
usual small medial sinus, the ligula small, angularly emarginate,
nearly flat and retractile, the palpi moderate. The antennae are
rather long, stout, compressed and subparallel, clothed throughout
with very stiff black setae, only very feebly enlarged apically, the
ninth joint longer than the transverse tenth joint and often fully
as wide, the tenth deeply, subobliquely sinuate at apex, with the
ends of the exposed apex spongiose, the eleventh very small, short,
obliquely truncate in contrary sense to the obliquity of the tenth,
and, as usual, spongiose at tip; the third joint is notably longer
than the basal joint, conforming to the general rule in the tribe.
The prosternum is porrect between the coxae and the convex abdomen
is always coarsely punctate in typical forms of the genus;
the trochantin is large and distinct. The legs are rather long and
well developed, the tarsi stout, the intermediate three joints of the
anterior very short and transverse; they are briefly setose through-
out; anterior tibiae moderately everted and acute at apex externally.
The tarsal claws are pale testaceous, in marked contrast to the black
and dullish integuments of the body and legs.
In Microschatia, as represented by the typical punctata of Solier,
the tenth antennal joint is notably wider than the ninth, the body
is flatter and has a very different type of dorsal sculpture, as seen
particularly in the rows of coarse punctures on the elytra. In
Pycnonotida the eyes are very much shorter, very thin or transverse
and are notably less coarsely faceted than in Pactostoma. There is