READING PUBLIC MUSEUM AND ART GALLERY

86 THE TRIBE ONCIDERINI
front occasionally nearly entirely dirty white pubescent, usually only with a vitta
each side of that color. Pronoturn often with a number of irregular, whitish macu­
lae, especially basally and medially. Elytra whitish aclsperse, the markings often
spurner on basal third. Body beneath black or piceous, donsely covered with dirty
white pubescence, toward sides becoming yellowish and variegated with dark brown,
medially with a number of glabrous, black maculae ; abdomen densely white or
yellowish-white pubesc(;nt, toward sides tinged with ochraceous, each sternite with
a band of irregular, black maculae, irregularly and densely placed, finer and sparser
on fifth. Legs fuscous, hoary pubescent, more or less variegated with dark brown,
sometimes dark brown punctate. Antennae black, covered with dark brown or
fulvous pubescence, bases of four,th, sixth, and eighth segments broadly annulate
with hoary, tenth and sometimes fifth narrowly so.
Head minutely, densely punctate, with a few fine punctures interspersed, a
median impressed line from occiput nearly to epistoma; front slightly elongate,
widened from below and from above to just beneath lower margin of eye, deeply
concave between antennal tubercles, minutely, rather densely punctate, a number
of coarse punctures intermingled, especially medially; genae elongate, vertical,
minutely, densely, and finely, sparsely, punctate; eye with lower lobe oblong-ovate,
subequal to gena in height; antennal tubercles robust, prominent, contiguous, armed
at apex with a short, vertical, obtuse horn, or long tooth. Pronotum strongly trans­
verse, sides irregular, gradually narrowed to apex, behind middle with a small,
prominent, obtuse tubercle; apical and basal transverse sulcus straight, except at
middle, the fonner deeper; disk with entire surface including sides rather coarsely,
sparsely punctate, with a distinct, prominent tubercle behind middle, on each side
with two smaller tubercles, the more basal one larger. Scutellum transverse, sides
straight, strongly oblique, apex narrowly rounded. Elytra. gradually attenuate to
apices, which are separately rounded; basal gibbosity feeble, disk basally rather
densely granulate-punctate, the granules fine, the punctures coarse, the former dis­
appear behind basal fourth, the latter gradually become finer and sparser to apex;
humeri prominent, the anterior margin feebly arcuate, slightly oblique, the angle
with a large, projecting ,tubercle. Prosternum simple, moderately broad, slightly
narrower to apex; mesosternal process short, broad, expanded posteriorly, apex
deeply, bilobely emarginate. Fifth sternite slightly longer than fourth, apex subtruncate
or feebly rounded. Procoxae with a prominent but small ,tubercle anteri
oriy; femora rat.her robust, distinctly clavate, profemora with a short, longitudinal,
slightly rugose ridge above :md below at base; metatibiae strongly expanded apic­
ally. Antennae about one and one-third times as long as body, the seventh seg­
ment attaining elytrai apex, sparsely fimbriate beneath on the four basal segments;
sCfLpe elongate, at least attairung middle of pronotum, rather robust, feebly ex­
panded from base to apex, at base slightly rugose beneath; third segment as long
as first, straight; fourth slightly shorter, rest subequal.
FEMALE. A little more robust; antennal tubercles with a short tooth at apex;
fifth sterrute one and one-half times as long as fourth, apex distinctly emarginate,
with a median impressed line expanded into a triangular impression apically; pro­
coxae with a feeble tubercle anteriorly; profemora without ridges at base; meta­
tibiae slender; antennae about as long as body, segments from fourth gradually
shortened.
LENGTH 13-17 mm.; width 5.4-7.5 mm.