PROCEEDINGS OF SOCIETIES. 71 



f39 Ascidia aspersa, Muller. v. 1. p. 35. 

 f40 Ascidia vitrea, Van Beneden. v. 1. p. 35. 

 f41 Ascidia conchilega, O. F. Muller. v. 1. p. 35. 

 f42 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. 

 |46 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. PELONAIAD^:. 



58 Pelonaia corrugata, Forbes and Goodsir. v. 1. p. 43. 



59 Pelonaia glabra, Forbes and Goodsir. v. 1. p. 43. 



V. SALPIDJE. 

 f60 Salpa runcinata, Chamisso. v. 1. p. 53. 



ACEPHALA LAMELLIBRANCHIATA. 



I. PHOLADIDJE. 



|61 Teredo Norvagica, Spengler. v. 1. p. 66. 



62 Teredo navalis, Linneus. v. 1. p. 74. 

 |63 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.* 

 f67 Xylophaga dorsalis, Turton. v. 1. p. 90. 

 f68 Pholas dactylus, Linneus. v. 1. p. 108. 

 j-69 Pholas parva, Pennant, v. 1 p. 111. 

 f70 Pholas crispata, Linneus. v. 1. p. 114. 

 f71 Pholas Candida, Linneus. v. 1. p. 117. 

 f72 Pholadidea papyracea, Solander. v. 1. p. 123. 



II. GASTROCBJENIDJE. 



f73 Gastrochaena 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. 

 |77 Venerupis irus, Linneus. v. 1. p. 174. 



III. MYADJ2. 



f78 Mya truncata, Linneus. v. 1. p. 163. 

 f79 Mya arenaria, Linneus. v. 1. p. 168. 

 80 Panopaea Norvegica, Spengler. v. 1. p. 175. 



Species not proved to be of British origin. 



