Quarterly Journal of Conchology. 129 



found the little fellow flourishing upon the high table-lands lying 

 between the headwaters of Clearwater and Snake Rivers. I think 

 upon more thorough research it will be found to be universally 

 distributed throughout the mountain ranges running through the 

 great basin between the Rocky and Sierra Nevada Mountains, and 

 may yet be discovered west of the Sierras. Some writers favor the 

 idea that it has been introduced in America through commerce, 

 but I think that an error, the fact of its being found in such remote 

 localities, in a wild and unsettled country, far away from the great 

 travelled routes across the continent, and its apparently universal 

 distribution in such a high altitude seems to me to preclude such 

 a possibility; we must therefore account for its presence in America 

 upon some other grounds, possibly a separate creation? 



NOTES ON THE OCCURRENCE OF .RARE AND LOCAL 



SHELLS IN UNRECORDED LOCALITIES. 



By W. G. BLATCH. 



In the hope that they may be interesting to the readers of 

 "The Quarterly Journal of Conchology" I have been induced 

 to cull the following "Notes" from my Journals and memoranda. 

 Besides, whilst profiting from the Notes of other contributors, I 

 have felt a little compunction for omitting to add to the general 

 stock any little items of Conchological knowledge of which I hap- 

 pened to be the possessor. 



Zonites excavatus var. vitrina, Fir. On the 20th September 

 last, whilst searching for Psclaphidce in moss attached 

 to a Poplar tree growing in a damp meadow between 

 Knowle and Packwood, Warwickshire, I found a 

 species of shell with which I was not previously ac- 

 quainted. After cleaning and labelling it, I was about 

 to put it away until I should find an opportunity of 

 critically examining it, when my friend Mr. W. Nelson 

 having come in unexpectedly, I showed the specimen 



