40 Mr. Alx>ev!s Catalogue of Land and Fresh-water Shells. 



61. H. arbustorum, Linn. 



In woods and on sea banks ; frequent 



Order. Gasteropoda. 



Fara. LiMACiANA.* 



Gen. VITRINA. 



62. V. pellucida, Drap. 



On plants and under stones in woods and shady places ; frequent. 



Fam. Calyptraciana. 



Gen. ANCYLUS. 



63. A.Jluviatilis, Drap. 



Patella lacustris, Turt. Brit. Fauna. 

 On stones in rivulets ; common. 



64. A. lacustris, Drap. 



Patella oblonga. Turt. Brit. Fauna. 

 On the stems of aquatic plants in ditches and ponds ; rather rare. Prestwick Car and 

 in a pond between the Town Moor and Westgate Hill, Newcastle. 



Order. Conchifera bimusculosa. 

 Fam. Naiad A. 



Gen. ANADON. 



65. A. anatinus, Turt. Biv. Brit. 



Mytilus anatinus, Linn. 

 In ponds ; frequent. 



Fam. CONCHACEA. 



Gen. CYCLAS. 



66. C. cornea. Lam. . 



C. rivalis, Drap. 

 Tellina cornea, Linn. 

 In ditches and ponds ; common. 



67. C. lacustris, Drap. 



In ponds on and near the Town Moor, Newcastle. 



* Not having paid sufficient attention to the naked MoUusca to give a satisfactory account of them, I 

 have not included them in the present catalogue. The three common species of Limax, ater, cinereus, and 

 oTcstis occur here, but it is probable there are more British species than have been yet described. The 

 subject requires further investigation. 



