01 n. pl. A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structu…
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A group of Tunicata, often shaped like a two-necked bottle. The group includes, social, and compound species. The gill is a netlike structure within the oral aperture. The integument is usually leathery in texture. See Illustration in Appendix.(Zool.)