] 30 Shells found in FJsscx County. 



Kellia rubra, G. On various species of sea -weeds (Algx) 

 in summer, abundant, Lynn beaches, Tr. 



Leda limatula, St. Salem harbor, W. St. Sh. 10. Lynn 



beaches. Tr. 



Leda myalis, St. Nucula G. Lynn beaches, P. 

 Leda sapotilla, St, Nucula G. Salem harbor, W. 



Limnceadct. Mr. True has found the following species of 

 this order near Salem, within its limits: and nearly all 

 the same have also been detected by Dr. Prescott, in 

 Lynn. 



Ancylus fuscus, G. 



Limnsea columella, G. 

 Limnsea elodes, G. 

 Limnsea macrostoma, G. 

 Limnsea modicellus, G. 

 Limnsea umbilicata, G. 



Planorbis armigerus, G. 

 Planorbis bicarinatus, G. 

 Planorbis campanulatus, G. 

 Planorbis deflectus, G. 

 Planorbis exacutus, G. 

 Planorbis elevatus, G. 

 Planorbis hirsutus, G. 

 Planorbis lentus, G. 



Physa ancillaria, G. 



Physa elongata, G. Lynn, T. 



Physa heterostropha, G. 



Lucina radula, G. Single valves on Lynn beaches, Tr, 



