186 



to designate the form. It does not appear to correspond with any of the 

 forms described by European writers. 



" A specimen that I suppose to be the young of this species is a small, 

 very thin, translucent, pale yellow, smooth shell, with an acute spire, a very 

 small, regularly spiral nucleus, five convex whorls, impressed suture, and 

 excavated columella-lip. The whorls are evenly rounded and with faint 

 traces of shallow spiral lines, no undulations. This was dredged by Messrs. 

 Smith and Harger, on Le Have Bank, 60 fathoms, in 1872. This may 

 possibly be the young of B. hydrojjhanum." (Verrill ; op. cit., pp. 497 and 

 498). 



BUCCINUM GLACIALE, L, 



Buceinum glaciale, L. (1758); et auct. 

 Bucciiinm carinatum, Phipps (1774). 

 Tritonium glaciale, O. Fabricius (1780). 



Off Little Metis, and Murray Bay, Sir J. W. Dawson ; Bonaventure 

 Island, off Perce, at low- water, one specimen collected by T. Curry, in 1872; 

 Ashe Inlet, Hudson Strait, one specimen of the double-keeled variety, 

 dredged by Dr. R. Bell in 1884; Greenland, Fabricius; Alaska, Dall. 



In a fossil state B. glaciale has been found in the Pleistocene deposits 

 at Black Point, N.B.; at Anticosti, Riviere du Loup, and Montreal, P.Q.; 

 and at Labrador. 



According to Sir J. W. Dawson, B. glacials " has the aperture somewhat 

 like that of B. ciliatum, and a very peculiar sculpture of spiral strise with 

 intervening bands marked with finer stride. It has also a carina angulating 

 the body whorl and sometimes more than one. In the latter case it passes 

 into B. Groenlandicum, Hancock (not Chemnitz) or B. Hancocki, Morch." 

 " The ordinary variety is most common in the modern Gulf (of St. Lawrence), 

 the latter in the Arctic seas and in the Pleistocene. This shell, usually 

 much decorticated, is the most common Buceinum in the Pleistocene of 

 Montreal.* 



In his latest list of Canadian Pleistocene fossils, and immediately after 

 the four lines last quoted. Sir J. W. Dawson cites Buceinum plectrum,, 

 Stimpson, as occurring recent at Portland, Maine, and Murray Bay ; and 

 fossil at Riviere du Loup. The types of B. plectrum are from the Arctic 

 Ocean north of Behring's Sea, and Dall has si'nce found specimens of it on the 

 coast of Alaska. It appears to be the only true Buceinum that has yet been 

 found in the seas of British Columbia, and its occurrence on the Atlantic 

 coast of North America would seem to require confirmation. In the Museum 

 of the Survey there are three recent and fresh specimens from Metis labelled 

 B. plectrum on Sir J. W. Dawson's authority, but it is difficult to see how 

 these can be distinguished from the Labrador specimen of B. Totteni, 



* The Canadian Ice Age, Montreal, 1893, page 257. 



