APPENDIX. 



307 



(a) A fragment of what appears to be this species is in my cabinet, and the name is also in Mr. Trimmer's Paper on the 

 Orton Gravel. Quart. Journ. Geol. Soc., vol. x, p. 346. 

 () A fragment, on the authority of Mr. Pickering. 



(c) In Mr. Brown's List. 



(d) Professor Morris, in his ' Catalogue,' gives this from Clacton. May not the burrowing habits of the living animal have 

 introduced it amongst the fossils ? I have frequently found dead specimens when examining the Cor. Crag sand. 



(e) I have been unable to obtain any satisfactory evidence of the fossil state of this species. An imperfect Clausilia much 

 resembles it, and may possibly have been mistaken as such. 



(/) From the Valley of the Nar. (C. B. Rose.) 



(g) My cabinet contains only a fragment, from Clacton, of what may be this species. 



(A) This is given with a ?, in Mr. Prestwich's Paper, Quart. Journ. Geol. Soc., vol. xi, p. 110, loc. Shacklewell Lane. It is 

 mentioned also in Mr. Trimmer's Paper on the Orton Gravel, loc. cit. ante. 



(i) From Sir Charles Lyell's Paper on the Mundesley Fresh-water Beds. Phil. Mag., vol. xvi, p. 365. 



(k) The fragment of a Physa, from Clacton, is in my cabinet, but not perfect enough to determine the species. 



(/) PI. lavis is mentioned in Sir Charles Lyell's Paper from Mundesley. I presume it is this species. 



