READING PUBLIC MUSEUM AND ART GALLERY

92 :rHE TRIBE ONCIDERINl
MALE. Elongateoblong, rather robust, subcylindrical; piceous or black. Head
gray pubescent, with a. median vitta to between antennai tubercles, upper lobe of
eye entirely and lower lobe posteriorly ma.rgined broadly, and front vittate either
side and its entire surface variegated, with ochraceous. Pronotum gray pubescent,
with irregulnr, ochraceous maculae which are more or less confiuent, and with six to
eight small, more or less round, dark brown maculae on disk. Scutellum gray pubes­
cent, with a triangular macula at apex dark brown. Elytra gray pubescent, w1th
very irregular, more or less confluent, ochraceous maculae, these sometimes so num­
erous that in area it exceeds the gray, entire surface (except an indistinct gray
fascia at middle which does not attain suture) with small, irregu.iar, dark brown
maculae which are very numerous, usually there are two larger on each elytron on
posterior margin of fascia; humeri at tips dark brown pubescent around tubercle.
Beneath reddish-brown, densely gray pubescent, sternal side-pieces, met.asternum
laterally, and a vitta either side of abdomen which does not attain fifth sternite, och­
mceous, a small, round macula either side of metasternum and onc either side 011
each sternite except fifth, dark brown, first, second, ami third stcrnites sometimes
with a much smaller one at extreme lateral margin at bnse. Legs piceous or dark
brown, gray and ochraeeous varicgnted; meso- and meta femora at apex with an irregular
dark brown fascia, this sometimes present on profcmora but only very indls
tinctly so; tarsi gray bterally, dark brown medially. Antennae with seape piceous,
grny pubescent, sometimes feebly variegated with ochraceous; third segment dark
reddish-brown, remaining segments piller, from third gray pubescent, from fourth
the apical halves dark brown pubescent.
Head above finely alut.aceous, with well-spaced fine punctures, 3. median im­
pressed line from occiput to near epistorna; front elongate, gradually widened to
epistorna, finely, densely punctate, with many coarse, deep punctures interspersed;
gena elongate, with a few coarse, deep punctures; eye with lower lobe elongate-ovatc,
two times genal height; antennal tubercles approximate,' prominent; produced at
apex into a robust, subacute tooth directed upward. Pronotum transverse, sides
arcuate, base slightly wider than apex; apical transverse sulcus abruptly eurvcd at
middle, basal sulcus shallow, oblique laterally; disk at middle with 11 broad, feebly
elevated tubcrcle, surface with wcll-spaced coarse punctures; lateral tubercles mod­
erate with an obtuse apex, base of these and of disk with a. few punctate granules
bearing setae. Scutellum transverse, sides feebly arcuate, apex broadly rounded.
Elytra with sides feebly widened behind middle, thence rounded to apices which are
broadly rounded together; bllsal half of disk moderately, coarsely punctate, apical
half with punctures smaller and sparser; humeri prominent, Rilterior margin arcu­
ate, angle with a. large, broad, rounded tubercle. Prosternum simple, much widened
posteriorly ; mesosternal process broad, sides straight, apex subtrunCAte or feebly
emarginate; fifth sternite about one-fourth again as long as fourth, feebly emarg­
inate at apex. Proeoxae globose, with a. robust, subacute tubercle; profemora very
gradually clavate, robust, finely rugose on basal half, remaining femora more
abruptly clavate; protarsi somewhat dilated. Antennae about one and two-thirds
to one and throe-quarters longer than body; scape cylindrical, only feebly clavate,
nearly attaining middle of pronotum, basally one or two deep grooves internally
and externally, remaining surface moderately, densely punctate; third segment
about one and one-half times as long as scape, somewhat thickened, straight;
fourth about one-third shorter than third, basal half slightly enlarged; remaining
segments slender, gradually shorter, except eleventh which is slightly longer than