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326
Antennæ secundi paris pone antennas primi paris insertæ,
productæ, epimerum primum minimum attingentes, in Æ.
spongiophila epimerum ultimum explentes. Scapus
arti-culis quinque semper constans, quorum tres primi perbreves,
duo primi semper transversi, conjuncti articulo quarto vel
quinto sæpius vix longiores. Articuli flagelli sæpius
nume-rosi, quam articuli flagelli primi paris interdum duplo
numerosiores, rarius his numero subæquales (Æ. nodosæ,
Webbii).
Pedes parium trium priorum trunci prensorii, breves, articulis
arte contiguis. Femora sæpissime lunata, latere interiore
setis spinisve in series binas digestis exornato. Ungulæ
permagnæ, incurvæ, sæpius longitudine et curvatura per
paria diversæ, sulco marginis posterioris baseos ad
processum terminalem magnum, rotundatum, articularium
tarsorum accommodatæ.
Pedes parium quattuor posteriorum trunci gressorii, breviusculi,
sæpissime teretiusculi, infra et in margine posteriore
seriebus brevibus armati spinarum brevium vel longiorum.
Femora sæpissime carinis acutis, leviter elevatis (Æ.
serripedi peraltis) exornata. Pedes ultimi paris in
adul-tis, præsertim in maribus, quam reliqui longiores.
Cauda sæpissime acute expressa, trunco sæpissime paulo
an-gustior, annulis sex argute discretis composita. Annuli
quattuor priores sæpissime æquales, primus tamen
Roci-nelæ quam reliqui valde et brevior et angustior. Annulus
quintus annulo quarto, quo multo angustior, lateribus
amplexus. Annulus analis amplus, caudam reliquam
sæpissime æquans longitudine, semicirculus, lingulatus vel
subtriangulus, post angustius vel latius truncatus.
Inter sexum1) virilem et femininum — quod quidem ad
faciem externam pertineat — sæpissime haud multum interest.
1) Paucos abhinc annos Bullar in quæstione brevi, quam
inscrip-sit: The generatiye organs of the parasitic Isopoda (v. Journal
of anatomy aud physiology, vol. XI, p. 118—123, tab. IV),
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