32 



Cancellaria Oonthouyi.* Frequent in various parts of 

 the Bay. 



Fusns Islandicus. Not uncommon in water varying in 

 depth from six to ten fathoms. 



Fusus decemcostatus. Rare ; a single specimen taken 

 by dredging near Egg rock ; sometimes taken from the lobs- 

 ter traps in water varying from six to ten fathoms depth. 



Fusus Bamffius.* Yery rare. 



Fusus rufus.* Frequent. 



Fusus harpnlarius.* Common. Very frequently taken 

 by dredging near Egg rock. 



Fusus pygraseus.* Yery common. 



Rostellaria occidentalis.* A single specimen from Mid- 

 dle Bank. 



Purpura lapillus. Exceeding common on all our rocky 

 shores. 



Trichotropis Borealis.* Not unfrequent. 



Buccinum plicosum. Common at L^mn harbor. 



Buccinum undatum. Yery abundant in water of three 

 to ten fathoms depth. 



Buccinum obsoletum. Yery abundant in the inlets of 

 the sea at Lynn. 



Buccinum trivittatum. Yery abundant in the shoaler 

 portions of the Bay ; and may be found in many places, at 

 low water. 



Buccinum rosaceura.* Rare. 



Buccinum lunatum. Among the rocks at the Eastern 

 end of Pound beach. 



Xylophaga cuneiformis. A single dead specimen occur- 

 red to me at King's beach. I have specimens in my cabi- 

 net from South Carolina. 



Note. Helix hortensis may be added to this list of mine, on the au- 

 thority of William A. Phillips, Esq., and Turritella interrupta, on the 

 authority of R. P. Questrum, Esq. S. T., jr. 



