116 Dr. Tate on the Mollusca of Alnwick. 



Gen. Bulimus, Scop. 



24. B. obscunis, Miill. 



Not uncommon. Under stones, especially on a limestone 

 soil and about old walls. Ratcheugh, Hulne Abbey, Emble- 

 ton, Newton. Seldom met with in abundance in one place. 



Gen. Pupa, Lamark. 



25. P. umbilicata, Drap. 



Common under stones, among moss, herbage, and about 

 rocks and old walls. Ratcheugh, &c. 



26. P. muscorum, Linn. 



Among grass and the roots of Psamma arenaria, the com- 

 mon bent of our links, near the sea. Not uncommon at 

 Alnmouth and Dunstanburgh. 



27. F. edentula, Drap. 



Rare. On dead leaves at Ratcheugh and Rugley wood. 



28. P. pygmsea, Drap. 



Rather rare. On limestone rocks and stones at Ratcheugh, 

 Alnwick moor, and Dunstanburgh. 



Gen. Clausilia, Drap, 



29. C. laminata, Mont. 



Very rare. This elegant southern species reaches the limit 

 of its distribution to the north in Hulne woods, where it is 

 found very sparingly. In Hampshire this shell is frequent in 

 the hedge-rows and woods, where it is often associated with 

 Helix lapicida, H. cantiana and Cyclostoma elegans, forms 

 almost peculiar to the southern portion of our island, and none 

 of which extends so far north as Alnwick. 



30. C. nigricans, Mat. and Rack, 



Not common. About old walls, rocks, and under stones. 

 Calish woods, Hulne Abbey, and very abundant on the lime- 

 stone rocks near Dunstanburgh Castle. 

 C. nigricans, Vardubia. 



Rare. About an old wall in Rugley wood. 



Gen. Zua, Leach. 



31. Z. lubrica, Miill. 



Common under stones, about old walls, and among leaves 

 and moss. Ratcheugh, Hulne Abbey, &c. 



Gen. Succinea, Drap. 



32. S. patris, Linn. 



On herbage in wet situations, common. This species attains 

 considerable size on Equisetum Talmateia, a plant which ap- 



