406 



Anomia aculeata, 15. 



ephippium, 14. 



patelliformis, 15. 



sqvamula, 14. 



iurbinaia, 8. 

 Anomiidæ, 14. 

 Antalis, 100. 



agilis, 102. 



entalis, 100. 



striolata, 101. 

 Aphrodite grønlandica, 49. 

 Aporrhaidæ, 191. 

 Ap o rrhais, 191. 



Macandreæ, 193. 



pes-carbonis, 192. 



pes-pelecani, 192. 



serresiana, 192. 

 Area aspera, 42. 



glacialis, 43. 



nodulosa, 42. 



pectunculoides, 43. 



raridentata, 43. 



scabraj 42. 



Arcacea, 32. 



Architæa catenularia, 213. 

 Arcidæ, 42. 

 Arcinella plicata, 93. 

 Argonauta arctica, 328. 

 Artemis, 57. 

 Astarte arctica, 50. 



compressa, 51. 



compressa, 53. 



corrugata, 50. 



crebricostata, 54. 



danmoniensis, 52. 



depressa, 54. 



elliptica, 53. 



scotica, 52. 



striata, 52. 



sulcata, 52. 

 Astartidæ, 50. 



Atys utriculus, 282. 

 Aui'iculina, 204. 



coarctata, 205. 



insculpta, 204. 

 Axinidæ, 59. 

 Axinopsis orbiculata, 63. 

 Axinus crouliuensis, 62. 



eumyarius, 62. 



ferruginosus, 63. 



Gouldii, 60. 



obesus, 61. 



pusillus, 62. 



Sarsii, 60. 



B. 



Bela, 222. 



angulosa. 227. 

 assimilis, 231. 

 bicarinata, 237. 

 cancellata, 227. 

 cinerea, 227. 

 conoidea, 236. 

 declivis, 224. 

 elegans, 225. 

 exa^ata, 232. 

 expansa, 240. 

 gigas, 239. 

 harpularia, 234. 

 Kobelti, 235. 

 kevigata, 239. 

 mitrula, 233. 

 nobilis, 228. 

 obliqva, 226. 

 Pingelii,.223. 

 pyramidalis, 222. 

 rugulata, 230. 

 scalaris, 229. 

 scalaroides, 231. 

 simplex, 239. 

 tenuicostata, 237. 

 Trevelyana, 235. 



