Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
A group of Tunicata, often shaped like a two-necked bottle. Thegroup includes, social, and compound species. The gill is a netlikestructure within the oral aperture. The integument is usuallyleathery in texture. See Illustration in Appendix.
Share your knowledge with the community
Browse our collection of 300,000+ community-written definitions
