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LAWRENCE S. DILLON AND ELIZABETH S. DILLON 91
dentiform and directed upward. Pranotum transverse, sides arcuate, base slightly
wider than apex, lateral tubercles very obtuse and feebly elevated; apiesl sulcus
shallow, feebly curved medially, basal sulcus deeper, oblique and shallow laterally;
disk with a very feebly elevated tubercle at middle, surface finely but very shallowly
punctate; base of disk and base of lateral tubercles with a few punctate granules
bearing setae. Scutellum transverse, sides broadly arcuate, apex modemtely
rounded. Elytra very feebly widened behind middle, thence arcuate to apiccs which
are each more or less broadly rounded; disk on basal half with very large, well
separated punctures, thence to apex punctures smaller but distinct; humeri promi­
nent, anterior margin feebly arcuate, more or less oblique, with a large, rounded
tubercle at angle. Prosternum deeply grooved mediany, broad, widened basally;
mesosternal process with sides straight, oblique, narrowed apically, apcx broadly
emarginate; fifth sternite equal to fourth, broadly emarginate at apex. Procoxae
globose, very feebly, obtusely tubercled; profemora feebly, gradually clavate, ro­
bust, ,finely rugose on basal third, remaining femora very narrow on basal half then
more or less abruptly clavate. Antennae one and two-thirds body length; scape
rather slender, more or less cylindrical, passing middle of pronotum, 'I'.'i.th one or
two deep grooves basally internally and externally, remaining surface very finely
punctate; third segment cylindrical, feebly robust, straight, half again as long as
scape; fourth about one-fourth shorter than- scape, basal half feebly enlarged, re­
maining segments gradually shorter, except eleventh which is slightly longer than
tenth ; heavily fimbriate on third and fourth, slightly less on first, fifth, and sixth
segments.
FEMALE. More robust; process on antennal tubcrcles shorter; elytm wider
behind middle; mesosternum broader; fifth sternite about half again lcngth of
fourth, at apex emarginate and shallowly, triangularly impressed; profemora more
clavate; antennae fimbriate slightly to tenth, about one and one-third times body
length, scape only feebly grooved basally.
LJo:NG'l'H 10-11 mm.; width 3-4 mm.
Holotype.-Male ; Rio de Janeiro, [C.M.].
Allotype.-Feroale ; topotypic; [C.M. J.
Paratypes.-Two males, two females; topotypic j [C.M.]. Two
females ; Brazil ; [M.C.Z., A.N.S.P.]. Male : Rio de Janeiro;
[M.C.Z.].
Peritrox nigrornaculatus Aurivillius
. PLATE VII, FIGURE 8
Peritrox nigromaculatus Aurivillius, Arkiv. Zool., XIII, 1920, p. 23.
Distinguished froro vermiculatus by eye having lower lobe twice
height of gena j and elytra with roany irregular, fulvous maculae
distinctly outlined with grayish or white pubescence, interspaces
brown pubescent, and large gray areas int.erspersed.