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146 ''£HE T.RIBE ONCIDERlNI
somewhnt transverse, about one-third wider than long, sides irregular, feebly ob­
lique, ncar apex more strongly narrowed, behind middle fl. small, distinct tubercle,
before and behind which is n strong depression; npieai transverse sulcus lllUTOW,
feebly impressed, obsolete at middle, basal one fine, shallow, merging with the
lateral oblique ones ; disk with median tubercle anteriorly feebly c!ev·ated, more
strongly so bns.'l.lIy, each side of this behind anterior sulcus 8. much more pro­
nounced, 8ubglob08e tubercle, laterally a flattened tubercle which is indistinctly
prolonged to middle of base by a narrow elevation. Scutellum slightly transverse,
sides straight, oblique, ftpex broad, feebly rounded. Elytra ",-jth sides slightly tapering
posteriorly, apices cn'ch angularly rounded; disk with baSllI gibbosity broad,
slightly oblique, not very prominent, extreme base smooth, t.hence finely granulate­
p\mctate, laterally and behind gibbosity punctures coarser but simple, behind
humeri coarsely, rugosely punctate, on apical half punctures finer and rather obso­
lete; humeri prominent, anterior margin broadly arcuate, slightly oblique, angle
with a distinct tubercle. Prosternum simple, narrow, n. little wider toward base ;
mesosternal process e."{pandcd posteriorly, apu emarginate. Procoxae anteriorly
with a long, slender tubercle, curved but not 3.1way uncate; femora robust, clavate,
metafemora shorter and more slender, profemora at base finely, transversely rugose;
meso- {lnd meta tibiae rnther strongly expanded apica!ly. Fifth sternite longer than
fourth, apex broadly truncate. Antennae one and one-fourth times body length,
eighth segment attaining e1ytral apex, sparsely fimbriate on four most proximal
segmentsj scape nearly attaining middle of pronotum, rather slender, slightly arc­
uate, clavate on apical two-.fifths, beneath at base with four to six coarse rugositiesj
third segment one-quarter longer than first, distinctly sinuous; fourth equal to first,
rest shorter, subequal to onc another; eleventh a little more elongate, acicular.
FEMALE. More robust; head with front bra.'1der, feebly narrowed above, an·
tennal tubercles unarmed or feebly so; prosternum a little broader ; proooxae unarmed,
profemora not rugose, tibiae not srongly expanded to apex; fifth sternite
one-half longer than fourth, apex broadly rounded, on apical three-fourths a strong,
subtriangular impressionj antennae very little longer than body, scape not rugose
at base.
LENGTH 14-18 mm; width 5.2-7.3 mm.
Holotype.-Male ; Pirapora, Minas Geraes, Brazil, November
11-13, 1919;- (H. G. Harris) ; [C.U. No. 2167).
Allotype.-Female; same data as holotype ; [C.U.].
Pat·atypes.-Male, female; same data as holotypej [C.U.]. Female
; Chapada, Brazil ; [C.M.].
PRISCATOIDES Dillon and Dillon, gen. nov.
Differs from Esonius in having the pronotum strongly constricted
at apex, unarmed latrally, basal sulcus sinuate ; elytra
with basal gibbosities more strongly elevated, humeri much more
projecting, their anterior margins much more oblique ; antennae
more strongly clavate on apical half, third segment feebly bisinuate.