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88 THE CANADIAN NATURALIST. [Vol. vi. 



Siphono-dentaliwm vitreum, Sars. 



Fossil — Leda clay, Murray Bay; also Norway (Sars). 



Recent — Gulf of St. Lawrence (Whiteaves) ; coast of Norway 

 (Sars.) It is a rare deep-water shell. 



Amicula Emersonii, Couthuoy. 



Fossil — Montreal. 



Recent — Murray Bay ; Halifax ; coast of New England. 



My specimens are merely detached valves. They indicate an 

 animal quite similar to specimens from Halifax referred to this 

 species, but differ slightly from specimens from Murray Bay. Dr. 

 Carpenter has labelled the drift form var. " altior." The dif- 

 ferences among the recent specimens, as well as the fossil valves, 

 will be discussed in the " Contributions to a Monograph of the 

 Chitonidae," about to be printed by the Smithsonian Institution. 



Pancturella (Cemorla) Noachina, Linn. 



Fossil — Quebec ; Riviere-du-Loup ; Clyde beds. 



Recent — Gulf St. Lawrence generally ; and throughout the 

 Arctic seas and North Atlantic. 



Acmcea tesfudinalis, Moller. 



Fossil — Labrador. 



Recent — Gulf St. Lawrence generally ; and throughout the 

 Arctic seas and North Atlantic. 



My only fossil specimen, obtained from Dr. Packard, is of the 

 small, elevated and depauperated variety so common at Murray 

 Bay and the north shore of the Gulf. It is curious that this 

 common modern species is so very rare in the Post-pliocene. 



Lepeta coeca, Moller. 



Fossil — Montreal ; Rivi^re-du-Loup ; Quebec ; Labrador ; 

 European Post-pliocene. 



Recent — Gaspe ; Labrador ; Arctic seas generally ; and coast 

 of New England rarely. 



This shell is not at all rare, living at Gasp^, and fossil at 

 Riviere-du-Loup. Carpenter remarks that some of my Montreal 

 specimens have the characters of variety striata of Middendorff 

 from Siberia. 



Ca^julus commodus, Middendorff. 



Fossil — Point Levi, near Quebec. One specimen only, found 

 by Mr. Gunn and communicated by Dr. W. J. Anderson. 



Recent — Scotland (Jeffreys). 



