214 Natural Histonj of the 



(Terrestrial.) 



Hel>x alternata. — This is perhaps the most widely diffused spe- 

 cies of the land snails found in Canada. It occurs abundantly 

 on both sides of the Ottawa, at Montreal, Point Levi opposite 

 Quebec, and down the south-east side of the St. Lawrence into 

 Gaspe, and is common over the whole peninsula as far as my ob- 

 servations extended, at Dalhousie, N.B., and along the Ristigouche 

 River. 



H. albolabris. — One of the most common species in the Ottawa 

 Valley, at Montreal and Point Levi, but does not extend so far 

 down as the County of Gaspe, having been last observed on the 

 coast of Metis. It was, however, found at Lake Matapedia, 25 

 miles south-east of Metis, and was extremely abundant at Dal- 

 housie and along the Ristigouche as far up as the mouth of the 

 Patapedia. 



H. monodon. — Very abundant under stones in pasture fields 

 near L'Orignul and in the augmentation of Grenville, Montreal 

 mountain. Point Levi under decaying leaves lying on disintergated 

 shale, but was not found further down the St. Lawrence. Not 

 having collected a single individual of this species during the 

 previous part of the summer while travelling in the northern part 

 of the district, I was astonished on coming to the Ristio-ouche to 

 find them in the greatest profusion in many places along that 

 river, as well as at Dalhousie. 



H. exoleta. — One specimen found on the Ristigouche about 

 five miles above the mouth of the Matapedia. 



II. tridentata. — Montreal mountain, rare. 



H. concava. — A few specimens found near L'Orignal and on 

 the Montreal mountain ; plentiful at Point Levi. 



H. horte?isis. — 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 main land it was first observed on Mount Commis, about 

 nine miles south of St. Luce and on the coast at Me! is, 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 Biandy Pots and Hare Island 

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

 The climate of Gaspe seems to b very favourable to their propa- 

 gation, as they appear to have spread over the country for a con- 

 siderable distance inland. The yellow and banded varieties 



