70 
PROCEEDINGS OF SOCIETIES. 
Of course, the nomenclature which appears in the above work is strictly followed, 
with one exception, which one is sufficiently accounted for in the proper place. 
But as Dr. Gray’s edition of Turton’s Manual of Land and Fresh-water Mollusca 
is in extensive use among naturalists in this country, it has been thought better to 
give his names as synonyms, hoping, by this means, that collectors will adopt the 
prior , though apparently new , names for those mollusca, fully confident as we are 
that this History, by Messrs. Forbes and Hanley, must unquestionably rank as the 
first work upon this subject, and will be the standard of reference to all who study 
the objects upon which it treats. 
The figures after the authority for the specific names, refer to the volume and 
page where the history of the mollusc is given in Messrs. Forbes and Hanley’s 
work. The synonyms, in italics, are the names given by Dr. Gray in his edi¬ 
tion of Turton’s Manual of Land and Fresh-water Shells. 
ACEPHALA TUNICATA. 
I. BOTRYLLIDiE. 
1 Aplidium ficus, Linneus. v. 1. p. 11. 
2 Aplidium fallax, Johnston, v. 1. p. 11. 
3 Aplidium nutans, Johnston, v. 1. p. 12. 
f4 Sydnyum turbinatum, Savigny. v. 1. p. 14. 
5 Polyclinum aurantium, Milne-Edwards, v. 1. p. 14. 
f6 Amouroucium proliferum, Milne-Edwards, v. 1. p. 15. 
7 Amouroucium Nordmanni, Milne-Edwards, v. 1. p. 15. 
8 Amouroucium Argus, Milne-Edwards, v. 1. p. 16. 
f9 Leptoclinum maculosum, Milne-Edwards, v. 1. p. 16. 
flO Leptoclinum asperum, Milne-Edwards, v. 1. p. 17. 
fll Leptoclinum aureum, Milne-Edwards, v. 1. p. 17. 
fl2 Leptoclinum gelatinosum, Milne-Edwards, v. 1. p. 17. 
13 Leptoclinum Listerianum, Milne-Edwards, v. 1. p. 17. 
14 Leptoclinum punctatum, Forbes, v. 1. p. 18. 
fl5 Distoma rubrum, Savigny. v. 1. p. 18. 
fl6 Distoma variolosum, Gcertner. v. 1. p. 19. 
fl7 Botryllus Scholsseri, Pallas, v. 1. p. 19. 
f 18 Botryllus polycyclus, Savigny. v. 1. p. 21. 
fl9 Botryllus gemmeus, Savigny. v. 1. p. 22. 
20 Botryllus violacens, Milne-Edwards, v. 1. p. 22. 
f21 Botryllus smaragdus, Milne-Edwards, v. 1. p. 22. 
f22 Botryllus bivittatus, Milne-Edwards, v. 1. p. 23. 
f23 Botryllo'ides Leachii, Savigny. v. 1. p. 23. 
f24 Botryllo’ides albicans, Milne-Edwards, v. 1. p. 24. 
•j-25 Botryllo’ides rotifera, Milne-Edwards, v. 1. p. 24. 
f26 Botryllo'ides rubrum, Milne-Edwards, v. 1. p. 24. 
II. CLAYELINIDJE. 
f27 Clavelina lepadiformis, O. F. Muller, v. 1. p. 26. 
f28 Perophora Listeri, Wiegmann. v. 1. p. 28. 
III. ASCIDIADiE. 
29 Ascidia intestinalis, Linneus. v. 1. p. 31. 
f30 Ascidia canina, O. F. Muller, v. 1. p. 31. 
f31 Ascidia venosa, O. F. Muller, v. 1. p. 31. 
f32 Ascidia mentula, O. F. Muller, v. 1. p. 32. 
33 Ascidia arachnoidea, Forbes, v. 1. p. 32. 
f34 Ascidia scabra, O. F. Muller, v. 1. p. 33. 
35 Ascidia virginea, O. F. Muller, v. 1. p. 33. 
f36 Ascidia parallelogramma, Q. F. Muller, v. 1. p. 34 
f37 Ascidia prunosa, Muller ? v. 1. p. 34. 
f38 Ascidia orbicularis, Muller, v. 1. p. 34. 
