Retrospect of the Shells of Essex County. Ill 



57. Astarte castanca. Say, 76. f. 45 and variety B. pro- 



cera 78. 



62. Anornia ephippttttn, Limiaus, 138. 

 65. Ancylus rivularis, Sat/, 224. f. 153. 



67. Auricula bidentata, 197. f. 130. 

 48. Balanus ebarnens, 15. f. 6. 



48. Balanus geniculatus, Conrad, 14. f. 9. 



48. Balanus ovularis, Lamarck, 17. f. 7. 



68. Buccinum obsoletum, Adams, 308. f. 210. 

 68. Buccinnm plicosurn, Menke, 303. f. 213. 



68. Buccinum trivittatum, Adams, 309. f. 211. 



69. Buccinum undatum, Linnceus, 305. The shell and 



animal are figured in the Penny Cyclopaedia, vol. 



IX. p. 454. 



75. Bulla triticea, Coutlwuy, 165. f. 98. 

 74. Cancellaria Couthouyi, Jay, 283, f. 190. 



58. Cardium pinnatulum, Conrad, 90. f. 57. 

 64. Crepidula fornicata, Lam: 158. f. 17. 

 64. Crepidula plana, Say, 159. f. 16. 



63. Chiton fulminatus, Couth., 148. 

 73. Cingula minuta, 265. f. 171. 



52. Cfochlodesma Leana, Conrad, 49. ff. 29. 20. 



53. Cumingia tellinoides, Conrad, 56. f. 36. 

 57. Cyprina Islaridica, Lam,.. 82. 



70. Fusus decemcostatus, Say, 287. f. 202. 



70. Fusus Islandicus, Martini, 284. 



71. Fusus harpularius. Couth., 29. f. 191. 

 51. Glycimeris siiiqua, Lam., 39. 



68. Lacuna vincta, 262. f. 178* 



72. Littorina palliata, 260. f. 177.* 

 72 Littorina rudis, 257. f. 175.^ 



72. Littorina tenebrosa, 259. f. 176.* 

 64. Lottia alveus, 154. f. 13. 



64. Lottia testudinalis, 153. f. 12. 



51. Machsera costata, 34. 



52. Mactra solidissima, Chemnitz, 51. 



73. Margarita arctica, Leach, 255. f. 173.* 

 73. Margarita cinerea, 252. 



