Of the Vicinity of Montreal. 417 



tiful at Montreal and Beauport in Saxicava sand ; of very large 

 size at Logan's farm. There are two distinct varieties, one corres- 

 ponding to the typical N. clausa (see Fig. in Can. Nat., Vol. 1), 

 the other possibly identical with N. Occlnsa of "Wood's crag 

 MoL, which it resembles in its more elevated spire and thinner 

 lips. Recent from Cape Cod and northward ; Fossil in British 

 crag (Cor.) 



'^Natica helicoides, (?) Johnston, (Fig. 24,) The specimens 

 represented by Fig. 24 correspond so closely with N. helicoides, as 

 described and figured by Wood, that I had ventured to give them 

 that name ; but Dr. Gould, though he considers the shell distinct 

 from N. Clausa, thinks it cannot be identified with the recent 

 N. helicoides as described by Forbes, .&c., unless indeed a larger 

 number of specimens should connect it with tbat species as a very 

 decided variety. These specimens differ from N. Clausa in their 

 deeply channeled suture, open though small umbilicus, prominent 

 inner lip and distinct revolving lines. The shell has evidently 

 been of a more dense texture and less easily weathered than that 

 of N. Clausa. 



■ ^Natica Grcenlandica, Beck,This shell occurs in some specimens 

 collected by Rev. Mr. Kemp at Beauport. Recent Cape Cod and 

 northward (Lam. to Cor.) 



*Natica Jleros, Say. A shell collected by Rev. Mr.. Kemp, at 

 Beauport appears to belong to this species. Recent American 

 coast (Lit.) 



*Menestho (Chemnitzia). albula, Moller, (Fig. Y.) Some shells 

 in the Col. of the Geological Survey appear referrable to this 

 species, though much larger than recent American specimens. 

 They resemble the shell figured by Emmons as Turritella. Recent 

 Cape Cod and northward (Lam. to Cor.) 



Scalaria Grcenlandica, Gould, (Fig. in Can. Nat., Vol 1,) Beau- 

 port, but not yet found at Montreal. Recent Massachusetts and 

 northward. Fossil in British crag (Cor. to D. S. Cor.) 



'* Turritella erosa, Couth, (Fig., 8.) Fragments from Beauport, 

 larger than recent specimens. Recent coast of N. England (Cor- 

 to D. S. Cor.) 



*JRissoa minuta, Stimp. — Found in interior of larger univalves 

 at Montreal. It is diflBcult to secure such small and fragile shells 

 in a perfect state, and I am therefore not quite confident of the 

 species. Recent on American coast, (Lit.) 



Littorina palliata, Say. In Lyell's list of Beauport shells. 



B 



