THE COMITY OF SPIDERS
does come to associate certain species with particular soils: Various
on beach pebbles, and
These preferences are no doubt in most cases determined by the
physical properties of the soil.
Eich., for instance, would
seem to prefer light loam, but its tubes are to be found in sand, in
chalk, or in any loose soil which is easily excavated, and through
which moisture readily drains away.
Chemical properties may exercise an influence in some cases, as,
for instance, in towns (see p. 158) or on heaths which have been
THE SPIDERS OF SANDHILLS.
Although we may see not a single spider as we pick our way
through the windswept clumps of Marram on a sandhill, careful search
will reveal a wealth of life and several interesting spiders not to be
met with elsewhere. To all intents and purposes we can regard the
following ten species as being restricted in Britain to sandhills:
A glance at the county records which are listed in the first chapter
will show that the
restricted to one neighbourhood so far as is known; that the
are southern in distribution; and that the remainder
are fairly widespread on sandhills round the coast of England.
From amongst the writings of O. P. Cambridge, A. R. Jackson, J. E.
Hull, W. Falconer, D. Pack Beresford, G. H. Carpenter, W. Evans and
others one could amass a list of species exceeding a hundred and fifty
which have been captured on sandhills, but in spite of this it is not