English: Alder, Joshua, Embleton, Dennis, Hancock, Albany, Hopkinson, John,Norman, Alfred Merle ,1905-12 The British Tunicata; an unfinished monograph, by the late Joshua Alder and the late Albany Hancock. Edited by John Hopkinson, with a history of the work by the Rev. A. M. Norman.London,Printed for the Ray Society. Volume 1 Plate 17

PLATE XVII.

THE BRANCHIAL SAC.

FIGS.

1. Ascidia mentula Müll. (p. 78) accepted as Ascidia mentula O F Müller, 1776 2. A. rubicunda Hanc. (p. 84)accepted as Ascidia mentula O F Müller, 1776 3. A. rubrotincta Hanc. (p. 86) accepted as Ascidia mentula O F Müller, 1776 4. A. crassa Hanc. (p. 90) accepted as Ascidia mentula O F Müller, 1776 5. A. mollis A. & H. (p. 93) Ascidia obliqua Alder, 1863 ? 6. A. plana Hanc. (p. 96) accepted name Ascidia mentula Müller, 1776 7. A. Alderi Hanc. (p. 99) accepted name Ascidia mentula Müller, 1776 8. A. rudis Alder (p. 101) accepted name Ascidia mentula Müller, 1776 9. A. producta Hanc. (p. 106) accepted name Ascidia conchilega Müller, 1776 10. A. inornata Hanc. (p. 109) ? 11. A. depressa A. & H. (p. 112)accepted name Ascidia conchilega Müller, 1776 12. A. elongata A. & H. (p. 113)accepted name Ascidia conchilega Muller, 1776

All the figures much enlarged, but reduced in various proportions from Mr. Hancock's drawings.