READING PUBLIC MUSEUM AND ART GALLERY

106 THE TRIBE ONClDERINI
Elytra with sides nearly straight, tapering slightly to apices, which are separately
rounded; basal gibbosity broad, feeble; entire basal one-fourth coarsely seriately
granulate-punctate, granules evanescent after anterior quarter, the punctures con­
tinuing to middle and beyond middle tnwards suture, apical half finely and obso­
letely punetate; humeri slightly prominent, anterior margin arcuate, slighUy
oblique, angle with a low tubercle from which runs a very short, feeble carina, its
length about half that of anterior margin; sides with a row of fine punctures and
on angle of declivity several irregularly placed coarse ones. Prosternum narrow,
simple. Procoxae somewhat tumid posteriorly, in front armed with a broad, obtuse
tubercle. (All six legs missing, except for coxae.) Fifth sternite three-fourths
again as long as fourth; apex feebly obtUEe, distinctly tufted at middle, surface
with a very shallow impression ncar tip. Antennae as long as body, finely fimbriate
beneath to apex; scape slender, apical one-third slightly capitate, not rugose; third
segment equal in length to first, visibly but feebly bisinuate; rest gradually shorter;
eleventh briefly processed at tip.
LENGTH 19 mm.; width 8 mm.
Holotype.-Femalc j Rio Santiago, Peru, Oct. 18, 1924; (H.
Bassler) ; [A.M.N.H.].
EUTHlMA Dillon and Dillon, gen. nov.
Differs from Plerodia (which it somewhat resembles in form
and in the carinate humeri) as follows : prothorax not conical but
before middle as wide as base, then narrowed to apex j front distinctly
broader; elytra more convex j antennae with third segment
usually only one-sixth longer than scape, seape with lower surface
not expanded apically but regularly arcuate; eye with lower lobe
shorter, broader ; and proeoxae uncate in male.
Small or moderately small, elongate-ovate. Head with front rather broad,
elongate, distinctly, gradually narrowed above; gena vertical ; eye with lower lobe
equal to or slightly longer than gena, broadly oblong-ovate; antennal tubercles prom­
inent, subappro:-,.-imate, with a short, robust spine at apex in male, with a short
tooth in female. Pronotum transverse, sides arcuate, unarmed or feebly tubercuhte,
base wider than apex; disk nearly globose or with feebly elevated, broad tubercles.
Scutellum transverse. Elytra slightly broader behind middle, thence feebly taper­
ing to apices, which are broadly, separately rounded ; disk at base with broad, feeble
gibbosities, surface coarsely punctate at base, more finely so to apex; humeri prom­
inent, with Do very obtuse tubercle at angle, followed by a carillll.
to middle, carina
broad shortly at base, thcn suddenly narrowed. Prosternum rather broad, narrower
anteriorly; mesosternal process wide, short, sides nearly straight, apex deeply
emarginate. Legs moderate in length; procoxae globoe, uncate in male, feebly
tubercled in female ; femora robust, clavate; metatibiae strongly expanded in male;
protarsi dilated in male. Antennae as long as body in male, slightly shorter in
female, scape reaching to middle of pronotum, robust, gradually, strongly clavate,
regularly arcuate beneat.h; third segment strongly bisinuate, one-fifth to one-fourth
longer than scape; eleventh subequal to tenth in male.