READING PUBLIC MUSEUM AND ART GALLERY

56 THE TRIBE ONClOERINI
side, these tumescences each bearing two feeble tubercles, armed
01' unarmed laterally ; metatibiae strongly e.'(panded in male ; ao­
tennal tubercles approximate but n t contiguous, armed with a
short tooth in male, shorter in female. Differs in eye being broadly
oblong-ovate, variable in height but never much shorter or longer
than gena j e1yt1'a less attenuate, basal gibbosities distinct but les:5
strongly elevated, broad, without granules, humeri similar in form
but often not followed by a carina; prosternum with or without a
pl'ocess j procoxae at most with a feeble tubercle in male j tarsi
with all claw segments pale at base ; antennae at most slightly
longer than body in male, shorter than body in female, distinctly
nnnulated from tbird or fourth segments, scape slender, at least
attaining middle of pl'onotum, abruptly cla.vate on apical third,
third segment more sh'ongly bisinuate, a little longer than first,
eleventb not at all elongate in male, without a terminal process.
:\1oderate sized, elongate-ovnte, robust, convex. Head with front elongate,
distinctly nnd gradually narrowed above; gena elongate, vertical; eye with lower
lobe broadly oblong-ovate, variable in height, hut never much shorter or longer
th.'l0 gena; antennal tuberclcs moderately prominent, narrowly sepnrated, ill male
with a. short, robust, subacute tooth. Pronotum tr:msverse, conical, base much
wider than IlpeX, ."Irmcd or unarmed later."lllYi dik with five more or less distinct
tubercles. Scutellum transverse, emargin."ltc at apex. Elytra distinctly attenuate
npically, ."Ipices each r.ther broadly rUjlllded; basal gibbosit.y distinct ; disk on
basnl hnlf simply punctate, sometimes rugoscly so; humeri prominent, anterior
margin slrongly arcuatc, oblique, anglc with a large rounded tuberclc, sometimes
followed by II short carina. Prosternum simple or ."Inned with a trnnsvcrse pro­
cess between prOCOXilC, wider posteriorly; mesosternal proce.;;s short, broad, emar­
ginatc Iatcrally, bilobedly so at apex. Legs moderate; procoxae ."It most with a
feeble tubercle in male ; fcmom rather strongly clllvate on apical third; mebtibiac
strongly expanded apically in male; tarsi with claw segment pale basally, apex
dark, prolani feebly dilllted in male. Antennae as IOllg as or slightly longcl' than
body in male, in female usually ."I little shorter; scape reaching to or nC.'lr middle
of pronotmn, slender, abruptly clavate on Apical t.hird; third segmcnt strongly
bisinunte, usually pale at base, a little longer than first, fourth and following seg­
ments pale basally, fourth disiinctly shorter than SC."lpc, rest gradu."IlIy diminishing
in length, elevcnth usually not elongate or processed at apex in male.
GENOTYPE : Hypselomus picticornis Bates.
KEy TO SPECIES
1. Prosternum with a transvcrsc, elevated process between procoxae ........ 7
Prosternum unarmed . . ........ . .......................... 2
2. Antennae with third segment palc pubesccnt at base, but surface is uniformly
piceous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . picticornis (p. 76)
Antennae with third segment baving at lnst bas."I1 quarter of surface pale . ... 3
3. Antenn."le with third segment pale on bassi quarter only, following segments
also only pale 011 basal quarter . . . . .. . .. . . . . . . . .. . .. /ulvo/aBeiata (p. 74)
Antennae with basal third or more pale on third and fol!O\v:ing segments .. . . 4