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22 THE 'l'RIBB ONCIDEl\INI
tinctly and a little more finely punctate, punctures evanescent, disappearing before
middle, apical half smooth except for more or less distinct costae, numbering
from four 1:Q six on each elytron, the most lateral of which ascends basally to
attain humeral apex; humeri oblique, ascending, at posterior angle with a more
or less prominent tubercle, from this on disk extends a short, oblique carina which
bends posteriorly then disappears suddenly. Prosternum simple. Procoxae
tumid posteriorly, tuberculate before, tubercle distinct hut not elongate; pro·
femora robust, parallcl·s.ided, constricted slightly at apical third, beneath trans·
versely rugose, especially between middle and apical fourth, other femora clavate;
metatibiae strongly enlarged on apical half. Fifth sternite one-half longer than
fourth, broadly truncate at apex. Antennae one-fourth longer than body, distinctly
fimbriate beneath on proximal four segments, thence sparS€ly so to apex;
scape robust, basal half nearly parallel-sided, internally and beneath coarsely,
transversely rugose, from middle strongly capitate; third segment distinctly
sinuous ; eleventh longer than tenth, terminating in a curved, attenuate process.
FEMALE. Antennal tubercles unarmed at apex; elytra less tapering posteriorly;
procoxae less tubcrculate anteriorly, profemora more slender basally,
slightly clavate, very feebly and obsoletely rugose beneath; meta.tibiae simple;
fifth sternite more than twice length of fourth, apex broadly truncate, median
impression broad, linear ; antennae distinctly shorter than body, scape more
slender, not rugose, eleventh segment .'Ohorter than tenth and finely constricted
at apex.
LENGTH 12.5-24 mm.; width 5·9 mm.
1'ype locality.-Bl'azi1.
Dist1"ibution.-Widely throughout the eastern balf of Brazil.
BnAZIL: 6 5, 3 '?; no locality data; [M.C.Z.-2 5, 2 '?; A.M.N.H.-2 5, '?;
Minn. U.-2 5]. J, '?; Santa Catharina, Jan.; [M.C.Z.]. J; Mafra, Santa
Catharina, December 1932; (A. Maller) ; [L. Lacey]. 4 5, 5 '?; Hansa
Humboldt, Santa Catharina, November, December, and February; (A. Maller);
[L. LaceyJ. 2 J; Entre Rios, Parana; [C.M.]. 2 J, S; Rio de Janeiro;
[M.C.Z.]. J; Viana, Espirito Santo, December, 1937; (A. Maller);
[Lacey] . 5; Vicosa, Minas Geraes, November 12, 1931; (E. J. Hambleton);
[U.s.N.M.]. S; Santarelli [C.M.l-
No LOCALITY DATA: 6 t, 5 !j!; [Minn. U.; U.S.N.M.; C.U.; }'·l.C.Z.J.
Rema1"ks.-Most of tbe specimens from Santa Catharina are
very pale pubescent above, with a pair of dark fasciae on each
elytron and may represent a race of the species but not sufficient
material in good condition was available from other localities to
decide the question at this time.
Hypsioma chapadensis Dillon and Dillon, spec. nov.
PLATE II, FIGURE 2·.
Differs from H. gibbera in elytra having the basal gibbosity
broader, only moderately elevated, more arcuate; humeri with an·