of the Land and Fresh-water Shells of Suffolk. l63 



has never been found either in Suffolk or Essex ; I must think 

 there is sufficient reason for considering it a distinct species. 



Nor is it a new occurrence for one species to bear the greatest 

 resemblance to the young of another. Montagu, as my friend 

 Dr. Leach informed me, considered Helix pellucida {Vitrina pel- 

 lucida of Draparnaud) to be the young of H. nemoralis, yet is it 

 a perfectly distinct shell ; and we have seen how nearly allied 

 are the young of different species in what has been said concern- 

 ing H. nitidula. 



Is this the Trochus Matoni of the Elements of Natural History? 



55. Helix nemoralis. Trans. Linn. Soc. vol. viii. p. 206. 



Very common in gardens and hedges. 



These shells are found without, with one, and with several dark 

 bands following the course of the volutions ; and are accordingly 

 placed as distinct species in my cabinet, although I have not 

 ventured to separate them in this paper. Nevertheless, it may 

 not be amiss to insert my reasons for considering them distinct, 

 as it will lead to the mention of some curious facts and illustra- 

 tions. 



In many places in Suffolk, in my garden at Wrabness, and on 

 an arid sandy common adjoining to Stony-Point, in the parish 

 of Walton in the Naze, I have repeatedly observed the several 

 sorts in copulation, not indiscriminately, as might especially be 

 supposed to be the case at Walton, where they lay by hundreds; 

 but, constantly the plain sort (Helix nemoralis, mihi) with plain, 

 the one-handed ( H. cincta, mihi) with one-banded, and the many- 

 handed {H. 5-fasciata, mihi) with its kind. What can this prove, 

 but that the three sorts are as many distinct species ? >• 



Another remarkable circumstance may be adduced in proof of 

 this : from the one-banded and many-handed sorts I have taken 

 the Spicula or Love-darts ; that of the former is four-sided in the 



Y 2 middle 



