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LAWRENCE S. DILLON AND ETIZABETH S. DILLON 39
mentary procesll of cleventh very conspicuous; fimbriate 00 first., third, fourth, and
fifth segments.
FEMALE. Antennal tubercles only vcry feebly produced; eyes nearly equnl to
genae in height ; prostel'llUlll noticeably widened behind middle ; pl'ocoxae not
tubercled; profeillora more gradually cla.vate, only feebly rugose basally; metatibiae
very feebly widened apically; fifth stcrnite nearly twice as long as fourt.b, deeply
emarginate and .sha.llowly, trillngulariy impressed apically; antennae only very
slightly longer than body, seape more slender.
LENGTH 15-18.5 mm.; width 6.5-8 mm.
Type locality.-Brazil.
Distr·ib1,tion.-Amazon region.
BRAZIL: 2 , 2 If'; Santarem, June, l!HOj [C.M.]. ; Para, July; (C.M.].
SilO Paulo de Oliven!l., June-July, 1883; (M. d'Mathan) ; (A.N.S.P.].
Hypsioma robllsta Dillon and Dillon, spec. nov.
PL. ... TE TI, l'IGUIlE 13.
Resembles H. chaseba and allies in the coloration but is distinct
from all that group in the prollotum having on disk either side of
middle a single, large tumescence (instead of two tubercles each
side) ; clytra distinctly less attenuate, with basal gibbosities much
broader, humeri more projecting, tubercle at angle larger ; eye
with lower lobe longer than gena ; procoxae in male strongly tuberculate;
abdomen medially thinly gray pubescent ; antennae
nearly one and one· half times length of body in male.
:M ALE. Elongate, ovate, very robu8t, convex ; fuscous, densely covered with
pule gray-fulvoU3 }1ubesnmce, mottled with brown. Front lnrgcly brown p\lbe,cent.
Pronot,al tumescences tinged with brown. Scutellum narrowly brown medially.
Elytrn. gra.y-fulvous pubescent on base, rest dark brown, mottled with gra.y-fulvous.
Body bene:ltn reddish-brown, hoary pubescent medially, at sides: pille gray-fulvous,
metepistorna and met..'1stcrnum latenlly maculate with brown; abdomen medially
piceous, covered with short, hoary puuoscencc, through which only a little of the
shining surface shows, at sides of each sternite, except fifth, a broad, truncated,
triangular macula of fulvous, the base coinciding with the apical margin of the
stcrnitcs, on Jirst. sternite reduced to an oval spot.. Legs piceous or dark reddish­
brown, irregularly eovered wit.h short, hoary, brown, and fulvous pubescence; mes:o­
and metafemora indistinctly annui3te with fulvolls before apex, tarsal claw segment
not paler (nor annulate) basally. Antennae fuscous, segments from fourth narrowly
roseate bastillYi dark brown pubescent, pale bases and bas!l.l half of third segment
hoary annulate; scape fulvous basally, d.'lrk brown toward apex.
Head above minutely alutaceolLs, with a median line from occiput to epistoma;
front Il3rrowly concave between antcnnal tubercles, minutely alutaceous; genae
vertical, minutely punctate, with a few larger punctures interspersed ; eye with
lower lobo broadly oblong, one-third again the height of gena ; antennal tubercles
9' ,