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LAWRENCE S. DILLON AND ELIZABETH S. DILLON 119
tapering to apex, unarmed; apical and basal transverse sulci sinuous, the former
less distinct than the latter, \vhich is merged into the lateral oblique ones; disk
with five small, indistinct tubercles, sparsely punctate across bltSe. Scutellum feebly
transverse; sides straight, slightly tapering; apex broad, indistinctly emarginate,
not elevated laterally. Elytra gradually attenuatc posteriorly, sides straight, apicc.s
separately rounded; humeri and much of base of disk occupied by a greatly elevated
crest, which is about as hlgh as broad and brQader than long, placed slightly obliquely
and armed at each angle of apex with a shining tubercle, the outer one of
which is a little larger; disk between crest and suture with an elongate gibbosity,
moderately sparsely and uniformly punctate, apical half of disk impundate; sides
below humeri narrowly and indistinctly punctate. Prosternum simple, narrow.
ProcoXfLe not tumid, with -a small, obtuse tubercle anteriorly; femora elongate,
middle ones most strongly so, profemora more robust basally than others, not
rugose; meta tibiae strongly expanded to apex. Fifth sternite one-half longer than
fourth, apex retuse, impressed apically very feebly and broadly. Antennae slightly
shorter than body, very sparsely fimbriate beneath to apex; seape elongate, slender,
only feebly clavate apically ; third segment a little shorter than first, broadly and
indistinctly arcuate downward from base to apex; eleventh shorter than tenth,
simple, its tip gradually attenuate.
LENGTH 14 mm.; width 8 mm. across humeral crest., 5.5 mm. behind crest.
'l.'ype locality.-Brazil.
Distrib1tion.-Southea.stern BraziL
BRAZIL: ; Rio de Janeiro, 1883; [A.N.S.P.}.
ALEXERA Dillon and Dillon, gen, nov,
Somewhat related to Plerodia but is distinguished by the larger
size of body; the antennae much longer than body in male, sea pe
more strongly clavate ; eye with lower lobe twice height of gena;
elytra more strongly attenuate, humeri obtusely tubercled, the
carina extending strongly behind middle of elytron ; prosternnm
broad j and metatibiae DOt expanded in male. There is a strong
resemblance in the eJytral maculation to H esycha.
Moderate-sized, elongate-ovate, robust. Head with front rather narrow, sides
only slightly oblique, nearly parallel ; gena. vertical, oblong; eye with lower lobe
large, twice the height of gena, oblong, slightly narrowed below; antennal tubercles
well separated, prominent, apex in male with a short, robust horn bent slightly
posteriorly. Pronotum transverse, slightly conical, apex narrower than base, unarmed
laterally; disk tuberculatc. Scutellum transverse. Elytra with sides nearly
straight, moderately attenuate apically; apices each narrowly rounded; disk with
,basal gibbosity broad, feebly elevated, simply punctate at base; humeri prominent,
with an obtuse tubercle, followed by a long carina to behind middle of elytron.
Prosternum broad, simple; mesosternal proces.:; broad, sides emarginate, slightly
widened apically, deeply, bilobedly emarginate at apex. Legs moderately long;