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English: 1=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 20  PLATE XX.  THE BRANCHIAL TUBERCLE. FIG. 1. Ascidia mentula Mull (p. 78) accepted name Ascidia mentula Müller, 1776  2. A. robusta Hanc. (p. 82) accepted name Ascidia mentula Müller, 1776  3. A. robusta another form. accepted name Ascidia mentula Müller, 1776  4. A. rubicunda Hanc. (p. 84) accepted name Ascidia mentula Müller, 1776  5. A. crassa Hanc. (p. 91) accepted name Ascidia mentula Müller, 1776 6. A. plana Hanc. (p. 96) accepted name Ascidia mentula Müller, 1776 7. A. sordida A. & H. (p. 121) accepted name Ascidiella aspersa (Müller, 1776) 8. A. canina Mull. (p. 124) accepted name Ciona intestinalis (Linnaeus, 1767) 9. A. Normani A. & H. (p. 134) accepted name Ascidiella aspersa (Müller, 1776) 10. A. affinis A. & H. (p. 137) accepted name Ascidiella aspersa (Müller, 1776) 11. A. elliptica A & H. (p. 142) accepted name Ascidiella aspersa (Müller, 1776)  All the figures much enlarged, but considerably reduced from Mr. Hancock's drawings.