130 THE NAUTILUS. 



I name this species in honor of the late Dr. Jas. Lewis, whose 

 work on the southern mollusca is well known. 



The color, and particularly the very regular, close lines of growth 

 at once distinguish this shell from all other species. It is perhaps 

 nearest to V. dalliana, but differs in color, shape and sculpture. In 

 dalliana there is a very minute spiral sculpture, not mentioned in 

 the original description, and only visible under a magnification of 

 about 60 diameters. 



NOTES. 



Note on Helix hortensis In my article on the distribution 



of Helix hortensis (The Nautilus, XX, p. 73, 1906). I over- 

 looked a very interesting article by Robert Bell, Jr., " On the 

 Natural History of the Gulf of St. Lawrence, and the distribution of 

 the mollusca of Eastern Canada." (The Canadian Naturalist and 

 Geologist, IV p. 215, 1859). As the note on H. hortensis has an 

 important bearing on its distribution and is probably inaccessible to 

 many, I quote it in full : " It seems scarcely credible that this 

 species has been imported from Europe, considering how widely 

 diffused and vastly numerous it has become along the Lower St. 

 Lawrence. On the mainland it was first observed on Mount Com- 

 mis, about nine miles south of St. Luce and on the coast at Metir, 

 where it was abundant and below which it seems to occupy the place 

 of H. albolabris, but is generally much more numerous. In 1857, I 

 found vast numbers of them on the Brandy Pots and Hare Island in 

 the middle of the St. Lawrence opposite Riviere du Loup. The 

 climate of Gaspe seems to be very favorable to their propagation, as 

 they appear to have spread over the country for a considerable dis- 

 tance in land. The yellow and banded varieties seem to be about 

 equally numerous. Where land has been recently cleared and burnt 

 over, their withered shells may be seen strewed in thousands over the 

 surface of the soil. In the valley of the Marcouin they were 

 observed to extend 12 miles inland, which was farther than at any 

 other place. The height at which the last specimen was found was 

 about 1500 feet above the sea, as indicated by the barometer which 

 we had with us. The young from the size of a grain of duck shot 

 to half that of the adult shell were met with in our journey up this 

 valley in the end of July." With this record as a basis it would be 



