Memoirs on the coleoptera

TENEBRIONID.E i8i
Group V Type horrida Champ.
As before stated this group is peculiar in having the basal part
of the mentum in close contact with the obtusely rounded and
rather short sides of the buccal opening and dilated apically,
partially enveloping these projections; but the gular pedestal,
though shorter, is well developed and, at each of its ends, there is
a rather large subcircular opening. The body is flatter above
than in the preceding group, larger in size, much more coarsely
sculptured and distinctly pubescent, the antennae slender though
rather gradually enlarged through joints eight to ten; the eyes are
more coarsely faceted and the sides before them are less laterally
prominent, less rounded and, anteriorly, are somewhat angulate in
a way quite foreign to any of the preceding groups; the elytral
ridges are low, subobtuse and are coarsely granulo-tuberculate
along their summits. The external apical angle
of the anterior
tibiae is abruptly produced, long, spiniform and finely aciculate, the
outer edge strongly spinulo-serrate, and the tarsi densely fulvo-
pubescent beneath.
Body oblong-oval, opaculate, dark chocolate-brown in color throughout,
the vestiture pale fulvous-yellow; head rather small, scarcely impressed,
coarsely and closely punctate; prothorax fully one-half
wider than long, the apex much narrower than the base, moderately
sinuate, the angles acute; sides rather strongly rounded, more convergent
and less arcuate anteriorly; basal angles obtuse but rendered
distinct by the small adjacent sinuses of the base, the latter evenly
rounded; surface coarsely, rather closely punctate, strongly convex,
abruptly rather widely concavo-explanate at the sides, the edge
almost vertically reflexed, moderately thin and granulo-crenulate;
pubescence rather short and very stiff; elytra barely one-half longer
than wide, between a third and fourth wider than the prothorax,
obtuse behind, the apical lobe obtuse but distinct; sides parallel,
nearly straight, obliquely rounding and reflexed to the very obtuse
and blunt basal angles, the thickened costuliform side margin bi-
furcating slightly behind the humeri and continuing nearly to the
apex, the other two discal ridges moderate, the inner feeble and
obtusely blunt, both extending from the base to apical fifth, where
they unite, the single feeble resulting line extending nearly to the
apical angles, crossing and uniting the ends of the two outer ridges,
the surface sparsely, unevenly granular and punctate, the larger
granules bearing rather short but stiff erect setae, the smaller and
more simple punctures bearing the subdecumbent stiff and peculiarly
arcuate but no shorter pale hairs; abdomen coarsely, closely, asperately
punctate and with very small and fine pale subdecumbent
hairs; legs rather short and slender, subcylindric, the tibia? and tarsi