ascidiidæ

Century Dictionary and Cyclopedia

1. A family of solitary ascidians, typically with the branchial aperture 8-lobed, the atrial 6-lobed, the branchial sac not folded, the tentacles simple, and the genitalia in close connection with the mantle. It is the typical family of the ascidians proper, including the simple forms, as Molgula, Cynthia, Ascidia or Phallusia, etc., as distinguished from the social and compound forms, and contains many species. See cut under Ascidia.