34r CATALOGUE OF THE MOLLUSCA 



2. H. ARBUSTORUM, Linn. 



Helix arhustoruin, Gray Turt. Man. 137, t. 3, f. 25. 

 In woods and on sea banks, frequent. 



3. H. NEMORALis, Linn. 



Helix nemoralis, Gray Turt. Man. 132, t. 3, f. 23. 

 On hedge sides and sea banks, common. 



4. H. HORTENSIS, 2full. 



Helix hortensis, Gray Turt. Man. 130, t. 3, f. 24. 

 Var. Helix hyhrida, Gray Turt. Man. 132. 

 In woods and on hedge sides, frequent. The H. hyhrida is 

 found at Stella. 



5. H. CAXTiANA, Mont. 



Helix carthimana, Drap. Hist. Moll. 102, t. 6. f 33. 

 Helix cantiana, Gray Turt. Man. 144, t. 3, f 26. 

 On road sides and hedge banks, occasionally. 



6. H. RrFEscENs, Penn. 



Helix glabella, Drap. Hist. Moll. 102, t. 7, f 6. 



Helix rufescem, Gray Turt. Man. 156, t. 3, f. 28. 

 Under stones and on plants by hedge sides, &c. Not uncom- 

 mon near Sunderland, and in other parts of the magnesian lime- 

 stone district. It is not met with in the neighbourhood of 

 Newcastle. 



7. H. HISPIDA, Miill. 



Helix hispida, Gray Turt. Man. 154, t. 4, f. 41. 

 On plants in woods and waste places, common. 



Var. 1. Helix concinna, JefF., Gray Turt. Man. 154, t. 12, 

 f 135. 

 Common on nettles and other plants by hedge sides, about 

 Newcastle, where it takes the place of H. rufescens. 



Var. 2. H. SERicEA (Miill. 1) Fer, Aid. in Newc. N. H. 

 Trans, ii. 340; Gray Turt. Man. 153, t. 12, f 134. 

 In woods, rare : Cawsey Dean, Tanfield, and in the Bath 

 Wood, Dinsdale. 



The great difficulty in distinguishing these hispid shells by 

 any permanent character, has induced us to consider them all 

 varieties of the same species, of which H. concinna and H. seri- 

 cea form the two extremes. 



