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88 THE TRIBE ONCIDEBINI
Small or moderate-sized; elongate-oblong, rather robust, subcylindrical; fus­
IlOUS to black, elytra usually with many small, glabrous maculae. Head with front
elongate, gradually narrowed above; genae slightly transverse or elongate; eye
with lower lobe elongate-oval or elongate-oblong, large, usually at least twice the
height of gena (one and one-quarter times genal height in vl!lI'miculatus) ; antennal
tubercles promiJlcnt, contiguous, at apex armed with rather long teeth, directed up­
wards, in both sexes. Pronot.um transver.:;e, base slightly wider than apex, lateral
tubercles distinct; disk slightly uneven. Scutellum transverse. ElytrR with sides
nearly straight, feebly tapering apically; api usually together rounded, in dellticolli8
(and sometimes venniculatus) separately so; disk at base without gibbosity,
punctate, not gr.mulatc; humeri moderately prominent, anterior margin arcuate,
more or less oblique, angle with n. distinct tubercle. Prosternum simple, slightly
wider posteriorlyj mesosternal process variable, apex always emarginate. Fifth
sternite Jonger than fourth, in male emarginate or subtnlllcate at apex, in femaJe
emarginate at apex, with n. median triangular impression. Legs moderate in lengthj
procoxac globose, anteriorly with a large, obtuse tubercle in male, in female un­
!lrmed; femora. clavate, profemora in male more robust, more or less cylindrical.
Antennae in male about one and two-thirds times, in female one and one-third
times, length of body, rather slender; seape elongate, reaching behind middle of
pronotum, more or less cylindriCtlI, feebly clavate; third segment nearly straight or
feebly arcuate, one and one-half to two timC3 length of first, robust or slender;
fourth slightly longer thaD first, rest much shorter.
GENOTYPE: PeritrO$ denticollis Bates, by monotypy.
KEy TO SPECIES
l. Eye with lower lobe only one and one-fourth times tile height of gena; elytrn
with irregular, vermicular, fulvoui! maculae outlined with thin whitish pubes-
cence, interspaccs glabrous ...... . . ........................ vermiculatus
Eye with lower lobe at least twice the height of gena ; elytra. without vermicular
fulvous macube . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2·
2. Elytra with fu]vous and dark brown pube5ccnt IlltlCulae ................... 3
Elytra with only dull reddish pubescent macultle . . . . . . . .. . . . . .. . . . dentiCQ/lU
3. Front entirely ochraccous pubescent, more densely pubescent laterally; elytfa,
with fulvous pubescence predominating, a broad, unbroken, hoary fascia
placed partiy anterior to middle of its length . . . . . . .. . . . . ... . .. . . . perbra
Front variegated with white and fulvous pubescence, fulvous vittate laterally;
elytra with gray pubescence predominating, hoary fascia broken, placed hind middle of length . ... . . . .. . . . . . . . . . . .. . .. ..... . . . . . . . 1I.igromacuiatus
Peritrox denticollis Bates
PLATE VII, FlGtJR.E 6.
Peritroz denticoUis But.es, Ann. Mag. Nat. Rist., (3), xvt, 1865, p. 313. Lacordaire,
Gen. Col., IX, 1872, p. 682.
Sufficiently distinguished by the black coloring of body and the
elytral colored maculae being dull reddish, separated, not confluent,
except near apices.