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AMERICAN JOURNAL 



iVofgs on Binney and Bland's Pulmonata Geophila. — Smiths. 

 Inst, Feb., 1867. 



Having just received the above work, I can only make a few 

 of the most important corrections as to West Coast species in 

 addition to what is stated in the preceding paper, differing from 

 the work in some particulars. 



The extreme conservatism observable throughout is disappoint- 

 ing to those who looked for a new and thorough re-arrangement 

 of the land shells, as the result of several years' study of the 

 animals of nearly all the species. It seems as if consistency 

 was sometimes sacrificed to the fear of innovation, as, for in- 

 stance, on p. 69, where the jaw of " Genus Helix " is described, 

 while that of the "Subgenus Patula," as given on pp. 75 and 

 86, is shown to differ very essentially. Also on pp. 83, 85, 157, 

 159, 184. 



