of the Land and Fresh-water Shells of Suffolk. l65 



intermingled with herbs of as dry a texture. And as in the 

 Sahara the variety of Land-snails afford nourishment to the 

 Ostriches, so may they here serve in part to sustain the various 

 species of water-fowls, which at stated periods resort hither and 

 to the surrounding creeks and marshes in great abundance ; for, 

 as some water-fowls {Eider and Scoter Ducks, for instance,) feed 

 on the animals of water-shells, others may do so on the land- 

 shells. 



* One observation more respecting the Walton Helices may per- 

 haps be thought worthy to be mentioned ; viz. that lying exposed 

 to the sun, with scarcely any shelter, a great proportion of them 

 have their upper surfaces more or less tinged with a beautiful 

 pink or rose colour ; and that this colour is really occasioned by 

 the sun is the more probable, their under parts retaining that 

 which is natural to them. 



56. Helix hortensis. Montagu Test. Brit. p. 412. 

 H. nemoralis 5. Trans. Linn. Soc. vol. viii, p. 207. 



Frequent in hedges at OfFton, Holbrook, Higham, Stoke by 

 Nayland, and Ipswich ; in Friston wood. 



Of much rarer occurrence in Essex, but is occasionally found 

 in Ramsey near the Stour ; and in hedges bordering the Har- 

 wich road, near Dovercourt turnpike gate. ' / ' 



Young shells, when minute, are scarcely to be distinguisliedf 

 from those of the preceding species. 



The H. hortensis, as well as the preceding, is divided into the; 

 plain, the single-banded, and the many-handed, each of various 

 colours ; and if future observation should prove that they confine 

 their amours to their respective kinds, and that their Spicula are 

 different, then ought they also, in my opinion, to be established 

 as distinct species. 



59. He- 



