PLEISTOCENE FOSSILS. 259 



P. Carpenter thinks that this and the British F. antiquus may prove 

 to belong to one very variable species. The F. despechis is an Arctic 

 form. The F. tornatus is recent, and is the form now found iu the Gulf 

 and River St. Lawrence, where it is much larger and better developed 

 than in the Pleistocene. C. decemcostatus is more southern. 



Neptimea decemcostata. Say. 



Fossil — Portland, Maine. 



Recent— Magdalen Islands and Gasp6 Bay (Whiteaves) ; coasts of 

 Nova Scotia and New England. 



This species has not yet been found in the Pleistocene of Canada, 

 where it is represented by C. toruatus. There are still two opinions as 

 to whether Say's species is identical with G. lyratus (Mart.) = Midden- 

 dor ffii (Cooper) from the Pacific coast. The latter is variable, and 

 graduates towards tornatus (Gould), but the living New England shells 

 are tolerably constant in character. 



Trophon scalar if or me. Gould. 



Fossil — Montreal ; Murray Bay ; Riviere-du-Loup ; Labrador. 



Recent— Greenland (Hayes) ; Little Metis ; Murray Bay ; Nova 

 Scotia (Willis) ; Gaspe and North Shore (Whiteaves). 



It is a rare shell in the Pleistocene, but of large size and in good 

 condition. 



Trophon clathratum. Linn. 



Fossil— Montreal ; Murray Bay ; Riviere-du-Loup ; Anticosti ; also 

 glacial beds of Europe. 



Recent— Riviere-du-Loup ; Little Metis ; Greenland and Arctic seas 

 generally ; Labrador ; Gulf St. Lawrence (Whiteaves). The allied 

 species or variety, T. Ounneri, has been found living at Gasp6 by 

 Whiteaves, and occurs at Little Metis, but not fossil as yet. British 

 Columbia ; Alaska (Dall). 



PROVINCE ANNULOSA. 



Anmdata, 

 Serpula vermicularis. Linn. 



Fossil— Montreal ; Murray Bay ; Riviere. du-Loup. 

 A small species of Serpula, apparently the above, though perhaps 

 the determination may be regarded as uncertain. 



