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224’
SILPHÆ:
Tarsi unguliformes.
Instrumentet cibaria retracta, membrana articularia maxillari
completa.
Ctypeus discretus, labro amplo, mandibulas contegente.
Mandibulæ breves, dorso posteriore turnido, apice denticulatæ.
Maxillæ mandibulis contectæ, ?«a/z’s binis, basi concretis,
teriore pectinata, exteriore barbata fimbriatave.
Ligula lata, membranacea, biloba.
Antennæ triarticulatæ, articulo secundo et tertio appendiculatis,
secundo elongato.
Terga thoracica et abdominalia scutata, scntis omnibus concretis.
Annulus analis exsertus, motorius.
Caput breve, obcordatum, pronum, foramine cervicali
in-feriore. Sulci frontales evanescentes. Hypostoma ovatum,
mem-branaceum vel subcorneum, membrana articularia maxillari
utrinque inclusum. Labrum transversum , margine priore
medio sinuato, inflexo, incrassato, spinuloso.
Maxillæ cardine magno, triangulari, stipite lato, mentum
haud excedente, per totam longitudinem membranæ articulariæ
affixo amplæ, sinuosæ. Palpi maxillares triarticulati, stipite
brevi, annuliformi. Labiuin mandibulis et labro contectum,
mento amplo, subquadrato. Palpi labiales biarticulati. Scuta
sternalia evanescentia. Spiracula rotundata, hiantia.
/. Mandibulæ retinaculo et mola car ente s,
angu-stiores, apice oblique truncatæ, subbifidæ, serrulatæ.
Labrum triangulum.
Maxillæ malis corneis, latiusculis, ac? apicem usque
coa-litis: exteriore apice membranacea, obtusa, dense barbata: iriteriore
crassa, inæquali, apice acuminato, recurvo. minime prominente,
margine interiore arcuato. pectine brevi, validissimo, obtusiusculo.
Stipites palporum labialium coaliti.
Appendices antennariæ pusillæ, parum exsertæ.
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