256 THE ICE AGE IN CANADA. 



undulatum, and on the other resembling B. Grcenlandicum, it has 

 received many names. It is believed to be B. boreale of Leach, and 

 Grcenlandicum of Morch. It is a very characteristic northern form. 

 (See figure, Plate I. ) 



Buccinum Granlandicum. Chemnitz. 



Fossil Leda clay and boulder clay, Montreal ; St. Nicholas ; 

 Riviere-du-Loup ; Tattagouche River (Paisley). 



Recent Greenland ; Alaska ? (Dall) ; Little Metis ; Murray Bay. 

 Specimens from Morch are identical with our fossils. This species is 

 probably the B. undatum of Fabricius. It is allied to B. cyaneum, 

 and may possibly pass into it. It may be B. angulosum (Gray). (See 

 figure, Plate I.) 



Buccinum tenue. Gray. 



Fossil Riviere-du-Loup, not uncommon ; St. John, &c., N.B. 

 (Matthew) ; Greenland (Hayes) ; Labrador (Packard). 



Recent Little Metis ; Murray Bay ; Gaspe ; Labrador (Packard) ; 

 Alaska (Dall) ; Arctic seas generally. A common arctic species, and 

 now living in the Gulf, though much more plentiful in the Pleistocene 

 beds. (See figure, Plate I. ) 



Buccinum ciliatum. Fabricius. 



Fossil Montreal ; Riviere-du-Loup. 



Recent Murray Bay ; Little Metis, Riviere-du-Loup ; Greenland 

 (Fabricius) ; Nova Scotia (Willis) ; Alaska (Dall). 



This is the original B, ciliatum of Fabricius, and has been recog- 

 nized as such by Dr. Stimpson. It is easily distinguished by its 

 narrow Nassa-like mouth, armed with a tooth on the front of the pillar 

 lip. It varies much in colour, especially in the longitudinal ribs. The 

 variety found at Montreal is only slightly ribbed. That at Riviere-du- 

 Loup is more distinctly ribbed, thus resembling the recent specimens 

 from Murray Bay. It is quite distinct from B. ciliatum (Gould), which 

 is very near the smoother varieties of B. undulatum. As it is a rare 

 and little known shell, I have figured two extreme varieties, a fossil 

 specimen from Montreal and a recent from Murray Bay. I submitted 

 specimens of this shell to the late Mr. J. Gwyn Jeffreys in 1876, and 

 after comparison with the type in Copenhagen he agrees with me in 

 referring them to Fabricius' species. He says it is the species figured 

 by Reeve as B. Moelleri. 



