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542

(1837-1884)
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542

in transversum perminute, concinne striata, costis e spiculis
perminutis compositis, ad aream stridulatoriam mandibularum
accommodata. Labrum semicirculum, longitudinis clypei cum
membrana articularia, convexiusculum, parcius barbatum.

Ocelli nulli.

Antennæ pone mandibulas insertæ easque spatio minore
non complentes, graciles, conicæ, pilis gracilibus parce
obsitæ; articulus primus subcylindricus, duplo longior quam
crassior, secundus conice cylindricus, quam primus quarta
parte longior et duplo pæne gracilior, tertius conice
cylindricus, perminutus, quam secundus quater brevior et pius
duplo tenuior. Appendices antennariæ articuli secundi conicæ,
graciles, excurvæ, acutæ, quam articulus terminalis duplo
breviores et triplo tenuiores.

Mandibulæ capite duplo breviores, subtetragonæ,
lævius-culæ; dorsum exterius deorsum acutius rotundatum, leviter
rugulosum, in parte scissoria in longitudinem profundius
strio-latum. Pars scissoria superne sulco transverso, acuto definita,
sensim arcuate incurva, tridens, mandibulæ sinistræ quam
dextræ manifesto longior; dentes acuti, in latere interiore
carinate expressi, medius terminalis. Caverna ampla,
pro-funda, in fundo inæquata, margine inferiore obtuso, superiore
carinate elevato, serrate tridentato, dentibus minutis,
mandibulæ sinistræ acutis, dextræ obtusis. Pars manducatoria quam
pars scissoria ter latior, infra valde convexa, inæquata, inter
condylum articularium et molam profundius excavata, supra
planiuscula areaque exornata mandibulæ dextræ argute expressa,
sinistræ minus manifesta, stridulatoria, extremitati posteriori
molæ adjacente, oblonga, leviter excavata, in transversum
con-fertissime, minutissime, concinne striata, sericeo micante, ad
aream stridulatoriam clypei ejusdem lateris accommodata.
Corona molæ in transversum spisse striata, mandibulæ dextræ
in longitudinem valde convexa et in partern scissoriam
rotun-date continua, mandibulæ sinistræ planiuscula, leviter excavata,
extremitate priore valde prosiliente, subrectangula.

Maia maxillarum perlata, oblonga, apice rotundato, vix
incurvo, setuloso, infra convexiuscula, supra planiuscula, sub

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