Memoirs on the coleoptera

TENEBRIONID/E 185
by the strongly reflexed sides, which are narrow anteriorly, becoming
very broad basally, the edge thick, perfectly even and finely punctate;
sides becoming parallel and feebly arcuate behind the middle;
surface broadly, evenly convex, very finely and rather sparsely
punctulate, the steeply reflexed sides coarsely, subrugosely punctate;
scutellum short, very broadly angulate; elytra three-fifths than wide, gradually
longer
evenly and obtusely ogival and gradually
moderately declivous behind, without apical lobe from above,
parallel, the sides strongly
feebly arcuate, the side margin narrowly and
reflexed, becoming very much elevated toward the basal
angles, which are covered by the thoracic angles; posteriorly the
margin is even and continuous to the apical angles; surface nearly
smooth, evenly convex, minutely and sparsely punctulate; abdomen
more shining, finely, sparsely punctate; epipleura becoming narrow
and concave at the elytral apex.
6.2 mm. Mexico (Colonia Garcia,
Length (cf)
Chihuahua),
12.5 mm.; width
C. H. T. Townsend
*townsendi n. sp.
The prosternum is feebly concave between the coxae, gradually
strongly declivous posteriorly, descending vertically upon the
anterior margin of the mesosternum.
*
Asidopsis n. gen.
This genus is a large one and somewhat composite
in external
facies, but the species hold together in many important characters,
showing that they constitute a true genus and not one or more
arbitrary sections of Asida. The body is generally stout and
oblong-oval but may be slender, as in macra, usually convex but
sometimes almost flat above, as in some of the opaca group and in
planata which is provisionally included, always glabrous or virtually
so. The mentum is more or less small, obtrapezoidal, leaving a
vacancy between its sides and those of the buccal opening, which
becomes wide in some of the polita group, the gular support rather
narrow, high and sinuate, the ligula swollen, angularly incised and
non-retractile, the eyes of the usual type in this part of the series,
having the anterior margin faintly sinuate, and the labrum is
narrowly sinuate at tip and moderately transverse. The antennae
are more or less stout, gradually broadening through joints eight
to ten, black, setose and not much compressed except apically.
The legs are moderate in length, slender, with the usual small stiff
hairs, the tarsi rather long, slender, much longer in the male than
in the female in the quadricollis group, more or less minutely