THE NAUTILUS. 103 



SHELLS OF PRINCE EDWARD ISLAND. 



BY GEO. H. CHADWICK. 



The following list has been compiled from data supplied by Mr. 

 Charles Ives, of Miscouche, an intelligent resident student of the 

 natural history of Prince Edward Island. The asterisk indicates 

 that specimens have been examined by me. 



* Urosalpinx cineren Say. Northumberland Strait, deep water, 

 quite rare, but large. 



* Purpura lapillus Linn. Carleton Head, plentiful. 



Nassa trivittata Say. Northumberland Strait, rocky bottom in 

 deep water. 



llyanassa obsoleta Say. Bedeque Bay, very abundant on mud flats. 



* Lunatia heros Say. Bedeque Bay and Northumberland Strait, 

 abundant. 



* Lunatia triseriata Say. Bedeque Bay, common. (The fine 

 suites of these two forms fully support Mr. Ives' contention that they 

 are distinct, as maintained by many writers, notably Dr. Gould.) 

 The dead shells of Lunatia heros usually contain * Eupagurus 

 acadianus Benedict. 



* Crepidula fornicata Say. Bedeque Bay, common. 



* Crepidula plana Say. Bedeque Bay, common in Natica shells. 



* Turbonilla interrupta Totten, var. fulvocincta, Jeffreys. Bedeque 

 Bay, very rare. 



Litorina littorea Linn. Bedeque Bay, very abundant. 

 Litorina palliala Say. Carleton Head, Northumberland Strait. 

 *Turnatina canaliculata Say. Bedeque Bay, not common. 

 Planorbis trivolvis Say. "Wright's mill-pond." 



* Ensis directus Conrad. Everywhere plentiful in sandbanks and 

 shoals. 



* Cyrtodaria siliqua Spengler. Off Richmond Bay, common in 

 codfish. 



* Mya arenaria Linn. Bedeque Bay, abundant. 



* Pandora gouldiana Dall. Bedeque and Richmond Bays, scarce. 



* Spisula solidissima Dillw., var. curta Gould (?). Bedeque Bay, 

 not very numerous ; formerly abundant. 



Venus mercenaria Linn. Bedeque and Richmond Bays, plentiful. 



* Petricola pholadiformis Lamarck. Bedeque Bay, very rare. 



* Anodonta cataracta Say. Brook south of Bedeque Bay, common 



