Dr. Tate on the Mollusca of Alnwick. 115 



last, presents within its aperture a well-marked ridge of a 

 white colour. 



14. H. ericetorum, Miill. 



In the neighbourhood of limestone. Plentiful at Denwick, 

 Alnwick Moor, Newton, Ratcheugh. 



15. H. hispida, Linn. 



Common under stones in woods and pastures, and about 

 old walls and hedge- rows. Ratcheugh, Hulne woods. 

 H. hispida, var. concinna, at Ratcheugh. 



16. H. sericea, Drap. 



Rare. Hulne and Calish woods, where it feeds principally 

 upon Equisetum Telmateia in damp places. 



17. H. aculeata, Miill. 



Rare. Occurs sparingly at Ratcheugh and Calish woods 

 on decaying leaves. This minute and remarkable species is 

 detected with difficulty, as its colour exactly resembles that of 

 the leaves upon which it is found. 



18. H. lamellata, Jeflf. 



In September 1857, I detected this rare and characteristic 

 northern shell in the Calish woods, and subsequently in 

 Rugley wood, in both situations on decaying leaves about 

 rocks near running water. In certain lights it exhibits a 

 satiny appearance, the result of the action of the rays of light 

 on the fine and sharply cut striae which cover its surface. 



19. H. fulva, Miill. 



Beneath stones in quarries and old walls, and among moss 

 and herbage in woods, hedge-rows, and pastures; not un- 

 frequent, though seldom met with in abundance in any one 

 locality. Ratcheugh, Denwick, Hulne woods. 



20. H. fusca, Mont. 



Rare. On Equisetum Telmateia, in damp places in Hulne 

 and Calish woods, associated with H. sericea. 



21. H. pulchella, Miill. 



Rather rare. On the limestone at Alnwick moor, Ratcheugh, 

 Calish woods, and Dunstanburgh. 



H. pulchella, var. costata. On the old walls at Hulne 

 Abbey. 



22. H. rotundata, Miill. 



Common under stones in woods, hedge-rows, and about old 

 walls. Ratcheugh, Hulne woods, &c. 



23. H. pygmaea, Drap. 



Rare. Among moss in a damp situation, on Shortridge 

 links, near Alnmouth. 



