114 HEL1CEA. 



he gives, would be incorrect of Icevig-ata, as far as our 

 present knowledge of geographical distribution will allow 

 me to judge. It would be strange indeed if the thorough 

 researches of so many Conchologists have never proved 

 Icevigata an inhabitant of that State, if it really exists 

 there, while inornata Binn. is met with by every collector 

 among the Alleghanies. Moreover, it must be remem- 

 bered that it is utterly improbable, although within the 

 bounds of possibility, that a shell confined strictly to damp 

 retired localities in the woods, and found with great diffi- 

 culty in its native localities, should have been transported 

 fifty or one hundred miles, and picked up on a wharf in 

 a city. Mr. Say speaks of its having been found by Mr. 

 Ord in his garden in Philadelphia; but on making inqui- 

 ries of that gentleman, I learn that a single empty shell 

 was picked up by him on his wharf, far from any garden, 

 but on the spot where he often found specimens of small 

 foreign animals, accidentally imported in the Liverpool 

 and London ships constantly disembarking their cargoes 

 there. It is a well known fact that some European snails 

 have been widely distributed by commerce. Limax varie- 

 g-atus F. is but too common in gardens and cellars of 

 Philadelphia and other maritime cities. Bulimus decollatus 

 Lin. (B. mutilatus Say) and Helix aspersa Mull, are still 

 common in Charleston, S. C. ; Helix hortensis Mull, has 

 not yet lost its footing on the islands off the coast of the 

 New England States ; and this same Helix cellaria has 

 been introduced and is still existing plentifully in Boston, 

 New Bedford (J. H. Thomson), Marblehead (J. P. Has- 

 kell), Lynn (S. Tufts, Jr.), Halifax (Smithsonian Institute 

 Coll.), Providence (J. G. Anthony, about 1830), Portland, 

 Me. (E. S. Morse). It has never been found in the inte- 

 rior. 



Every American author has coincided with my views of 

 glaphyra and inornata; among them are Binney, Gould, 



