244 



THE ICE AGE IN CANADA. 

 Fossils. — Plate YI. 







Some Characteristic Gastropods.— 1, Neptunea despecta; 2, Admete viridula; 3, Tritono- 

 fusus Kroytrl; 4, Natica clausa ; 5, Scalaria Groenlandica ; 6, Velutina zonata ; 

 7, Acirsa Eschrichtii; 8, Trichotropis Arctica; 9, Lepeta caeca; 10, Amieula Emer- 

 sonii; 11, Cylichna alba ? 



