  In his previous papers (J. reine angew. Math. 544 (2002), 91--110;
math.AG/0103203) the author introduced a certain explicit construction of
superelliptic jacobians, whose endomorphism ring is the ring of integers in the
$p$th cyclotomic field. (Here $p$ is an odd prime.)
  In the present paper we discuss when these jacobians are mutually
non-isogenous. (The case of hyperelliptic jacobians was treated in author's
e-print math.NT/0301173 .)
