FI—SHE8" AND THE WEB —’OF LIFE -
295
.
With, foreign bodies, surrounding them With a pearly cover—‘
ing which puts an end to their activities and renders them
harmless._ ,_
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_
:
5
-,
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,
If theŸ-lodger obtains food With the assistance of his
;
host, he is called a commensalist. The young of. many
'
species, GadOids,.Horse-Mackerel, Noùeus, etc., cofnmonly
called séads and mackerel midg’es (Rocklings), live under
the umbrellas of large jelly-shes of Various kinds. They
are protected in this way, it is supposed, fromlarger shes
!
'æ’_
_
"
.‘7:
lodging With_aHolothurian.
that niaÿ-‘not like the lock of the jelly—shes, Whilst a quantity
of “smaller animals paralysed by the stinging-cells of the
_
.
medUs‘æ fall to their lot.
In the tropics many shes O£
different kinds (Labroids, Chætodontè, etc.) live a
sort of life, playing hide—and-seek amdngthe
One
Small Perœid (Amplprio) even lives inside a large Actinia‘
_
and'seems to
the latter, WhiChrecipto— _
cates by
Such-a
…
? Benet accrues to bo*th host and -lodger, the ,60mi€nSàlism _f
tutnst0!sÿfnbiosiä
_j
”?
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