110 
THE COMITY OF SPIDERS 
does come to associate certain species with particular soils: Various 
species of 
Zelotes
,
including 
Z
. 
latreillei
,
on chalk, 
Arctosa perita 
on 
sand, 
Lycosa arenicola 
on beach pebbles, and 
L
.
 trailli 
on mountain 
screw. 
These preferences are no doubt in most cases determined by the 
physical properties of the soil. 
Atypus affinis 
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 
burned. 
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: 
Zelotes 
electus
 C.L.K.,
 Clubiona juvenis 
Sim., 
Agroeca lusatica 
L.K.,
Philodromus fallax 
Sund., 
Attulus saltator 
Sim., 
Hyctia nivoyi 
Luc., 
Phlegra fasciata 
Hahn, 
Synageles venator 
Luc., 
Xerolycosa miniata 
Sim., 
Mecopisthes pusillus 
Menge. 
A glance at the county records which are listed in the first chapter 
will show that the 
Clubiona
,
the 
Agroeca 
and the 
Mecopisthes 
are 
restricted to one neighbourhood so far as is known; that the 
Phlegra 
and the 
Synageles 
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 





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