414 Newer Pliocene and Post Pliocene Deposits 



times, is increased by the direction of the present arctic currents, 

 which give a boreal character to the marine fauna of Eastern 

 America, as far sou.th as Cape Cod. 



In conclusion of this pare of my subject, I may state that the 

 precise limitation of the sea basins that occupiel the St, Law- 

 rence valley is of very great geological interest, when taken in 

 connection with the conditions of life indicated by the fossils. 

 The extension of observatious on the fossils and the beds in which 

 they are contained, is therefore very desirable ; and I beg to invite 

 to it the attention of observers. All the localities of the marine 

 fossils should be observed, with the elevation and nature of the 

 beds containing them. Any remains of land animals or plants 

 imbedded with the sliells would be of especial interest. Facts and 

 specimens bearing on these points will always meet with fittention 

 if sent to the Geological Survey, to the author, or to the editors of 

 this journal for communication to the Natural History Society. 



I now proceed to give a list of the fossils found in these de- 

 posits ; and as an aid to other inquirers, and a basis for future 

 additions which I hope to make, I have thought it desirable to 

 include not only the species recently obtained or identified by 

 invself, (amounting to about 30, and indicated in the list by aste- 

 risks), but those previously known, with references to publislied 

 figures and descriptions, synonymy, and new facts as to distribu- 

 tion in recent seas. Figures are also given of a few species not 

 previously figured from this formation, or presenting peculiarities 

 •bi interest. 



I have to acknowledge the aid received from Dr. A. Gould, of 

 Boston, who has kindly employed his extensive knowledge of 

 American shells, in determining several species which I had not 

 the means of identifying, Bathymetrical facts are given chiefly on 

 the authority of Stimpson, (" Marine mollusks of New England"). 

 Littoral extends to low wat':;r mark ; Laminarian to 1 5 fathoms ; 

 Coralline to 50 fathoms; Deep Sea Coralline to 100 fathoms. 



List of Canadian Tertiary Fossils. 



(Species marked thus* have not been previously published as Canadian 

 Fossils. (Lit.) denotes littoral, (Lam.) Laminarian; (Oor.) Coralline ; 

 (D. S. Cor.) Deep Sea Coralline ; (C. Gr. S.) Collection ofthe Geological 

 Survey of Canada.) 



VERTEBRATA. 



Phoca — Species not determined. Bones of posterior extremi- 

 ties, discovered by Mr. Billings, at Green's Creek, Ottawa, and 



