PROCEEDINGS OF SOCIETIES. 
71 
f39 Ascidia aspersa, Muller, v. 1. p. 35. 
f40 Ascidia vitrea, Van Bene den. v. 1. p. 35. 
•j-41 Ascidia conchilega, O. F. Muller, v. 1. p. 35. 
•j-42 Ascidia echinata, Linneus. v. 1. p. 35. 
43 Molgula oculata, E. Forbes, v. 1. p. 36. 
44 Molgula tubulosa, Rathke. v. 1. p. 36. 
f45 Cynthia microcosmus, Savigny. v. 1. p. 37. 
f46 Cynthia claudicans, Savigny. v. 1. p. 37. 
47 Cynthia tuberosa, Macgilivray. v. 1. p. 37. 
48 Cynthia quadrangularis, E. Forbes, v. 1. p. 38. 
49 Cynthia informis, E. Forbes, v. 1 . p. 38. 
50 Cynthia tessellata, E. Forbes, v. 1 . p. 38. 
51 Cynthia Limacina, E. Forbes, v. 1 . p. 39. 
52 Cynthia morus, E. Forbes . v. 1. p. 39. 
53 Cynthia rustica, Linneus. v. 1. p. 39. 
54 Cynthia grossularia, Van Beneden. v. 1 . p. 40. 
55 Cynthia ampulla, Brugicre. v. 1 . p. 40. 
56 Cynthia mammillaris, Pallas, v. 1. p. 40. 
57 Cynthia aggregata, Rathke. v. 1 . p. 41. 
IV. PELONALADJE. 
58 Pelonaia corrugata, Forbes and Goodsir. v. 1. p. 43. 
59 Pelonaia glabra, Forbes and Goodsir. v. 1. p. 43. 
V. SALPIDiE. 
f60 Salpa runcinata, Chamisso. v. 1. p. 53. 
ACEPHALA LAME LLIBR AN CHI AT A. 
I. PHOLADID^E. 
f61 Teredo Norvagica, Spengler. v. 1. p. 66 . 
62 Teredo navalis, Linneus. v. 1. p. 74. 
f63 Teredo megotara, Hanley, v. 1. p. 77.* 
f64 Teredo bipennata, Turton. v. 1. p. 80.* 
65 Teredo malleolus, Turton. v. 1. p 84.* 
f66 Teredo palmulata, Lamarck, v. 1. p. 86.* 
f 67 Xylophaga dorsalis, Turton. v. 1. p. 90. 
f 68 Pholas dactylus, Linneus. v. 1. p. 108. 
f69 Pholas parva, Pennant, v. 1 p. 111. 
f70 Pholas crispata, Linneus. v. 1. p. 114. 
•f*71 Pholas Candida, Linneus. v. 1. p. 117. 
f72 Pholadidea papyracea, Solander. v. 1. p. 123. 
II. GASTROCHJENIDiE. 
f73 Gastrochsena modiolina, Lamarck, v. 1. p. 132. 
f74 Saxicava Arctica, Linneus. v. 1. p. 141. 
f75 Saxicava rugosa, Linneus. v. 1. p. 146. 
f76 Petricola lithophaga, Retzius. v. 1. p. 151. 
f77 Venerupis irus, Linneus. v. 1. p. 174. 
III. MYADiE. 
f 78 Mya truncata, Linneus. v. 1. p. 163* 
|79 Mya arenaria, Linneus. v. 1. p. 168. 
80 Panopsea Norvegica, Spengler. v. 1. p. 175. 
* Species not proved to be of British origin. 
