191 



known one to live for a month under a loose stone and without 

 water. 



Astarte. 

 A. castanea. Found at Phillips Beach and at Swampscott. 

 A. sulcata. Found alive at Point Beach and Phillips Beach. 

 A. quadrans. Taken from fishes stomach, Swampscott. 



Cyprina. 

 C. islandica. Plenty at Long Beach, Lynn ; the young are 

 found in the stomachs of fishes. 



Cytherea. 

 C, convexa. Found living, on Chelsea Beach, and at Point 

 Beach, Swampscott. 



Venus. 

 V. mercenaria. Plenty in City Mill Pond. 

 V. gemma. Plenty in Mill Pond before the railroad was 

 built, but few to be found since. 



Cardium. 



apiSum. ( Found in fishes at Swampscott. 



Cardita. 

 C. borealis. Found on Point Beach and in the stomachs 

 of fishes. 



Nucula. 

 N. limatula. 



n' mmuta Taken from the stomachs of fishes brought 



Nisapotilla. [ mto Swampscott. 



N. tennuis. J 



N. proxima. Found in Salem Harbor and from fish. 



Unio. 

 U. complanatus. In all the large ponds. 

 U. radiatus. In Flax and Tomlin's Ponds. 

 U. nasutus. In Flax Pond, but not plenty. 



Anadon. 

 A. fluviatilis. Flax and Floating Bridge Pond. 

 A. implicata. In all the large Ponds. 



Mytilus. 

 M. edulis. Common on rocky shores. 

 M. pellucidus. A variety of the last, and found with it. 



