PLATE V 



Figure 30. Columbella lunata. 



31. Columbella avara. 



(A) and (B), head, (C), operculum. 



32. Nassa obsoleia. 



(A), proboscis extended and feeding on shell. 



33. Nassa iriviUata. 



(A), tentacles expanded in a straight line. 



34. Buccinum undatum. 



35. Buccinum cinereum. 



36. Fusus islandicus. 



