Shells found in Essex County. 



Plerotoma violacea, St. in Bost. Proc. iv. 17. Muddy bot- 

 tom of Salem harbor. 



Pupa curvidens, G, Phillips' Point, Lynn, Gould 189. 



Rissoa eburnea, St. in Bost. Proc. iv. 15. Two specimens 



in thirty fathoms, off Cape Ann. 

 Rissoa multilineata, St. in Bost. Proc. 1. c. Dredged in five 



fathoms off Great Misery Island (Salem) and also near 



Nahant. 

 Rissoa pelagica, St. Cingula semicostata, Mighels, Bost. 



Journ. iv. 49. Somewhat abundant in deep water off 



Cape Ann. St. Sh. Bost. Proc. iv. 15. 



Scalaria Groenlandica, G. Off Nahant, T. & H. St. Sh. 



39, stomachs of fishes, Salem harbor, W. Lynn beaches, 



Tr. 

 Scalaria Novanglise, Couth., Bost. Journ. ii. 96. pi. 3. f. 5. 



A single specimen off Cape Ann, Couth. 1. c. 



Serpula vermicularis, G. Lynn, P. Beaches at Lynn, on 

 the smaller sea weeds, Tr. 



Solemya velum, G. Salem and Lynn, Tr. See Stimp- 

 son's " Shells of New England," p. 21, for an account of 

 the habits of this animal. 



Solen ensis, L. Shores Lynn, Salem, &c. 



Spirorbis sinistrorsa, G. Abundant on Fuci. &c., Salem, 



Tr. 

 Spirorbis spirillum, G. On algae, Lynn, Tr. 



Succinea campestris, G. Salem, Russell. 

 Succinea ovalis, G. Salem, Russell. 



Terebratula septentrionalis, G. Salem harbor, not rare, W. 



Teredo dilatata, St. in Bost. Proc. iii. 113. In floating 

 wood, such as buoys at Marblehead and Lynn, T. 



Thracia truncata, Mighels. Deep water off Lynn, T. St. 

 in Bost. Proc. iv. 13. 



