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Branchiostegal spine absent
No trace of hepatic crest
Longitudinal and transverse sutures present
Fifth pereopod exceeding antennal scale by
length of dactyl
Petasma with distolateral lobes spout-like
and as long as distomedian ones
In females, anterior plate of thelycum semicircular,
articulating to intermediate plate and with a median groove which
continues on intermediate plate
The latter is broad, quadrate and continuous
to posterior sternal plate
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