396 THE CANADIAN NATURALIST. [Vol. 



VI. 



Buccinum widafum, Linn, 



var. undulatum, Moller. 

 var. Lahradorlcum, Reeve. 



Fossil — Saxicava sand and Leda clay, Riviere-du-Loup ; La- 

 brador ; Duck Cove, St. John, N.B.; Maine (Packard). 



Recent — Gulf St. Lawrence ; south Grreenland to Nantucket. 

 (See Figure.) 



I cannot satisfy myself that there is any good specific distinc- 

 tion between this shell and^. nndatum of the European seas and 

 glacial beds. It varies very much in size, in slenderness, in the 

 fineness of the spiral striation, in the development of the ribs, in 

 the extension of the mouth, and in the thickness of the shell. The 

 coarser forms are B. Labradoricum, which passes into the ordi- 

 nary nndatum. Medium varieties are B. undidatiim, and smooth 

 varieties pass into B. cyaneum and B. Tottenii, which last is the 

 ciliatum of Gould. 



Buccinum Tottenii, Stimpson. 



Fossil — Riviere-du-Loup, Saxicava sand and Leda clay. 



Recent — Murray Bay and Tadoussac ; also Newfoundland 

 Banks. It has some resemblance to B. HumjjJirei/sianum, Ben- 

 net, but is specifically distinct. It is the B. ciliatum of Gould, 

 but has no connection with the ciliatum of Fabricius, except a 

 slight resemblance to the smoother forms of the latter. It is re^ 

 markable for its very regular spiral lines, absence of folds and 

 convex whirls. 



Buccinum cyaneum, Bruguiere. 



Fossil — Riviere-du-Loup, abundant. 



Recent — Murray Bay and Tadoussac ; deeper parts of Gulf 

 St. Lawrence (Whiteaves) ; Arctic seas. 



This species or varietal form is well represented in the Figure, 

 which is taken from a large Riviere-du-Loup specimen. Being 

 on the one hand very near to if not identical with the smooth 

 varieties of B. undulatum, and on the other resembling B. Green- 

 landicum, it has received many names. It is believed to be B. 

 boreale of Leach, and Greenlandicum of Morch. It is a very 

 characteristic northern form. (See Figure.) 



Buccinum Greenlandicuyn, Chemnitz. 



Fossil — Leda clay and Boulder clay, Montreal ; St. Nicholas ; 

 Riviere-du-Loup. 



Recent — Greenland. Specimens from Morch are identical 



