I quote from page 48:
Helix arbustorum - The Grove Helix. Plate IX.
fig.22. Sub-glubose, sub-pellucid, with five volutions; mottled
with ash-colour, and streaked with deep chestnut zigzag lines;
a single deep brown band commences at the edge of the outer
lip, and continues round the middle of the body and the
volutions to the apex; 3/4ths of an inch in diameter.
Inhabits groves in Britain.
EAP clearly ripped off the sexiest book in the English language.