On a petition for dissolution of marriage presented by a husband or wife on the ground of adultery, the petitioner shall make the alleged adulterer or adulteress a co-respondent, unless the petitioner is excused by the Court from so doing on any of the following grounds, namely:—
(a)that the wife, being the respondent is leading the life of a prostitute or the husband, being respondent is leading an immoral life and that the petitioner knows of no person with whom the adultery has been committed;
(b)that the name of the alleged adulterer or adulteress is unknown to the petitioner although the petitioner has made due efforts to discover it;
(c)that the alleged adulterer or adulteress is dead.].