of the Land and Fresh-water Shells of Suffolk. 163 
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 i in Suffolk, in my Ata at t Weabness, 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-banded ( H. cincta, mihi) with one-banded, and the many- 
banded (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-banded sorts I have taken 
the Spicula or Love-darts ; that of the former is four-sided in the 
r2 middle 
