Quatrefages, 1835
Body very large, Pinnules oval, frilly and extend on to the distal ends of the parapodial trunks. Hyaline glands deeply pigmented from the third parapodia in the superior half of ventral Pinnules. Chromophil glands large and voluminous from the fourth parapodia, in inferior half of Pinnules. More characters can be accessed by backtracking the key:
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