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THE BIOËLOGY;QF
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inaybealkroûndïth€,bodÿ; frOm—:the
b_.ackÏîof'—'the head of:—even st”eifti‘ng on»thé ahead. at thesn0ùt,
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along thegback (dorSal n) toîthe fail (caudaL n), then along
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asthe
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fnedia»,or vertical ns.“
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Potentially,-:everymuscle segment of the bddy=maÿcontbuîe
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to
of, the —;marginal ns;
'to'f the
mOvete‘nts' of the body and ,the
of“the abdominal
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.there_isjonly…aïshè_ft doi—sal
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Sig1è dorsal'fextending Ïthe whole way from-head to tail.
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as in some of the
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(VFlgr)anywherealongthe ventralmargmfromabout &
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Justhkethemarglnalnsffrorj' bûdS—Êïpæsædfout-from the
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;is =ni‘or‘e rèSt-iÿiçted
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ow1ngtothemterference ÔÎthe abdominal—:
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