The first bifid neuropodial lobes appear on the twenty-first setigerous segment.
Differing from the other species here described in having nine setigerous thoracic somites.
When the setigerous joint is not conspicuously larger than the preceding one.
Dorsal cirri present in addition to branchi on the first four setigerous somites.
First branchia on each side attached to second somite just in front and mesad of the first setigerous tubercle.
