Title: The Biological bulletin
Identifier: biologicalbullet79mari (find matches)
Year: [1] (s)
Authors: Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983
Subjects: Biology; Zoology; Biology; Marine Biology
Publisher: Woods Hole, Mass. : Marine Biological Laboratory
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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DEVELOPMENT OF SYMPLEGMA VIRIDE 275
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FIG. 2. Development from egg to first colonial organism. A, egg; B, swim- ming tadpole, showing three adhesive organs and single complex sense organ; C, metamorphosing stage with tail absorbed and eight vascular ampullae growing out as organs of attachment; D, first functional stage of ascidiozob'id shown in C with open siphons, and active gill splits in form of protostigmata; E, same individual as in D, after some growth, with protostigmata transforming into rows of definitive stigmata; F, later stage of same showing further subdivision of protostigmata, elaboration of ampullary system, and appearance of first two buds; G, the two buds and their relationship to the vascular ampullary system, at a higher magnifica- tion, the smaller still attached at its point of origin at the base of the right ampul- lary vessel, the larger having lost its original connection and acquired a secondary attachment through its own left ampullary vessel. amp, ampulla; &„ b~, first and second buds; end, endostyle; v, left ampullary vessel; vr, right ampullary vessel.

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