/h'lix (i.sj)crsa i/i Cnlifonna. 131 



trial and Air-Bnalliiug MolJiit^ks of North America, etc.." re- 

 ])orts this tipecies, as found "In gardens in Charleston, South 

 Carolina, and vicinity, where it has existed for fifty years : I 

 found it i)lcntifii]ly iu St. Micliael's Chui'chyard, in 18T5 : also, 

 has been found at New Orleans and Baton Eonge : Portland, 

 Maine; Nova Scotia; Santa Barbara. California: Hayti, St. 

 Jago, Chili, etc.; it is a Eurojiean species, accidentally intro- 

 duced into this country, or rather by commerce as an article of 

 food. It evidently is a species peculiarly adapted to coloni- 

 zation." 



Though credited to California as above, I have always thought 

 that this was an error arising from hasty or mistaken determina- 

 tion, and that the shell upon which it rests was either an indi- 

 vidual of the species since described as H. Tryoni* or H. 8tearn- 

 siaiia,\ or perhaps an aberrant H. Kellettii, of which specimens 

 sometimes occur, which in color, elevation and general aspect, 

 resemble dwarf individuals of //. as-persa of Mhller. My previ- 

 ous quotation from Mr. Binney Avill show that the latter species 

 is credited to Santa Barbara ; it has never been confirmed from 

 said point, or from any other on the west coast of N"orth America, 

 by any of the numerous collectors of later years. Dr. Cooper^ 

 in his Geographical Catalogue of the Mollusca (April, 1867), 

 very properh' omits it from the list of West American species. 

 I have numerous specimens, however, of H. Tryoni, from Santa 

 Barbara Island. 



The late Dr. Philip Carpenter, in his Report on the Mollusca 

 of the west coast of North America, J says, " Among the wasted 

 opportunities of obtaining very valuable information on geo- 

 graphical distribution, must unfortunately be recorded the sur- 

 veying voyages of the ' Herald ' and ' Pandora,' Capt. Kellett. 

 E. N., C. B., and Lieut. Wood, E. N. The former of these gen- 

 tlemen commanded the 'Starling' during the Sulphur Expedi- 

 tion. Their zeal for science is shown not only by the large num- 

 ber of fine and valuable shells which they brought back, but 



* Described by Dr. Newcomb, in 1864, and 



t By the late Dr. Gabb, in 1867. 



X To the British Association, 1856, paragrapli 50. 



