•114: Dr. Tate on the Mollusca of Alnwick. 



by any white opacity ; upper surface strongly and 

 regularly striated, the strise being continued over the 

 base bat not so well defined on this aspect ; whorls 5 

 to 5i, well rounded, especially on the inferior surface ; 

 ; umbilicus very large and capacious, disclosing all the 



whorls ; aperture rather small, orbiculo-lunate, as 

 broad as high ; diameter I of an inch. 



Gen. Helix, Drap. 



9. H. aspersa, Miill. 



This is one of our commonest and most generally known 

 snails. It is a pest in gardens, devouring vegetables, par- 

 ticularly cabbage, with the greatest avidity. This species, as 

 well as the common slug, is still used by some, in this part 

 of the country, in their domestic pharmacopoeia, and is put 

 great trust in for the care of pulmonary complaints. So far 

 as my own experience goes, and from what I have been able 

 to learn from others, it does not appear to be a remedy of 

 any efficacy. Like many other articles of a pecaliar and 

 out-of-the-way character, a dose of snail may be productive 

 of good, provided the patient indulging in its use is firmly 

 convinced of its salutary powers. 



10. H. arbustorum, Linn. 



A handsome shell, but rare near Alnwick. Hulne woods 

 and at Alnmouth, where it is found upon reeds by the side of 

 a ditch. 



11. H. nemoralis, Linn. 



Common. Very plentifal on the Links by the sea shore at 

 Alnmouth. In gardens, fields, hedge-rows, and woods. 



12. H. nemoralis, var. hortensis. 



Found with us only in the immediate neighbourhood of the 

 sea. Very abundant at Alnmouth. This species is very fond 

 of the stem and leaves of Senecio Jacobsea (the common Rag- 

 wort), from a single plant of which, I have collected more than 

 twenty specimens. It varies much in colour and external 

 markings. A pretty variety has two narrow brown bands on 

 the under surface, between which is a row of brown spots, each 

 connected by a thin brown line. In the aperture of this shell 

 and at a distance of 2 lines from its external margin, a narrow 

 but well-marked ridge appears ; the colour of this varies, and 

 usually corresponds to that of the mouth. 



13. H. caperata. Mont. 



In limestone quarries and on the links by the sea coast. 

 Ratcheugh, Alnmouth, Denwick, &c. This species, like the 



