Tlie Laiarencian Formation. 345 



sea while Canada was beneath the waves still attached to them. 

 Balanus, an acorn ; Uddevalla is a town in Sweden, where this 

 species is found not only fossil but living. 



The above are the principal species found in the drift, and it 

 should be remarked that many of them do not occur v/est of 

 Montreal. Tcllina Grcenlandica and Saxicava rufjosa are the 

 species most widely diffused, extending further inland than any of 

 the others; Mytilus edulis 2in(\. Mya iruncata come next, having 

 been found as far west as the City of Ottawa. East of Montreal, 

 the species increase in number and individuals as we approach 

 the ocean ; west of Kingston no marine drift shells have been dis- 

 covered. The following is a list of the Canadian fussils of the 

 drift or Lawrencian periods : 



1. Whales. Species not determined. There is part of a skele- 

 ton in the collection of the Geological Survey at Montreal. It 

 was found in the clay near the city. 



2. Seals. Species not determined. Green's Creek, Gloucester. 

 Specimen's in collection of Geological Survey, Montreal. The 

 bones of the posterior limbs found by Mr. P. A. McArthur, 

 Ottawa, already figured in this journal. 



3. Mallotus villosus. The common Capelan of the gulf, fossil 

 at Green's Creek, and also at Flat Rapids, Madawaska River, 

 County of Renfrew. 



4. Cyclopteris lumjms. The lumpsucker, a fish common in the 

 Atlantic, fossil at Green's Creek. It is said that these two 

 species of fish are the only ones found, both in a living and fossil 

 state. 



MOLLUSCA. 



5. Buccinum undatum. 



6. FuHUS carinatus. 



1. Trichotropls borealis. 



8. Natica clausa. 



9. Velutina ? 



10. Scalaria Grcenlandica. 



11. Scalaria borealis. 



12. Litiorina palliata. 



13. Mya truncata. 



14. Mya arenaria. 



15. Saxicava rugosa. 



16. Tellina Groenlandica. 



17. Tellina calcarea. 



