Scaleback

• (n.) Any one of numerous species of marine annelids of the family Polynoidae, and allies, which have two rows of scales, or elytra, along the back. See Illust. under Chaetopoda.
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Scaleback

Scale'back` noun (Zoology) Any one of numerous species of marine annelids of the family Polynoidæ , and allies, which have two rows of scales, or elytra, along the back. See Illust. under Chætopoda .
Found on http://www.encyclo.co.uk/webster/S/24
No exact match found