READING PUBLIC MUSEUM AND ART GALLERY

40 THE TRIBE ONClDERINI
robust, prominent, with a rather long, obtuse tooth nt apex. Pranctum strongly
transverse, sides nearly parallel on basal half, before middle ditinctly tapering to
apex, unanncd, although subangulate near middle; apical transverse sulcus visible
as a broad fovea each side, basal one shallow, coalescing with the deeper lateral
oblique ODes; disk posteriorly finely and sparsely punctate near middle, with an
elongate, oval tubercle at middle on basal two-thirds, each side entirely occupied
by a strongly elevated, nearly semispherical tumescence, which is not traversed by
any impression. Scutellum transverse; sides oblique, straight; apex broad, feebly
arcuate, slightly depressed near middle. Elytra robust, sides straight, distinctly
tapering t.o apices, which are separately rounded; basal gibbosity very prominent,
subglobose, coarsely punctate and with a few granules anteriorly, extreme base of
disk broadly smooth, interrupted by only a few fine granules, behind which disk
becomes finely, sparsely punctat.c, punctures obsolete behind middle, disappearing
before apex, each elytron with two or three more or less distinct costae on apical
two-thirds; humeri prominent, anterior margin short, oblique, angle with a very
prominent, rounded tubercle, from which a carina extends nearly directly posteriorly
to anterior fourth of disk; sides rather coarsely and densely punctate. Prosternum
moderately wide, simple. Procoxae very tumid posteriorly, with a conical, pro­
jecting tubercle ,'\nteriorly; profemora robust, subcylindrical, with a broad, deep,
oblique ipresion above, basal two-thirds beneath finely rugose, other femora
clavate, the metafemora less strongly so; meta tibiae only a little more elllarged than
mesofemom. Fifth sternite but slightly longer than fourth, a..pex broadly truncate.
Antennae much longer than body, the seventh segment attaining elytral apex,
fimbriate beneath on more proximal segments, very sparsely so distally from
scventh; scape robust, clavate, bencath strongly arcuate, below at base transversely
rugose; third segment one-sixth longer than first, distinctly and broadly bifiexuose;
fourth lind fifth successively shorter,' rest equal to the latter in length; eleventh
sctose apically, not processed.
LENGTH 14.5 mm.; width 6.5 mm.
Ilolotype.-Male, Upper Rocana, N. Para, Brazil, July, 1918 ;
(S. M. Klages ); [C. M.J.
Hypsioma simplex Bates
PI,ATE II, FIGURE 14.
Hypselomus simplex Bates, Ann. Nat. Hist., (3), XVI, 1865, p. 168-
Hypmoma simplex Bates, loco cit., p. 170.
Differs from the constellata group in having the elytra entirely
brown pubescent, base not pale, basal gibbosities feebly elevated,
bI'oad; humeri only moderately projecting, with a large tubercle
at angle ; abdomen medially thinly gray pubescent ; pronotum on
disk with the two more lateral tubercles only feebly separated,
FEMALE. Elongate-ovate, moderately robust, convex; fuscous, entirely cov­
ered with dense, dull fulvous-hrown pubescence, pronotum and elytra indistinctly
and irregularly mottled witb darker brown. Body beneath dark reddish-brown,