this looks like the references for the same marriage listed earlier on the Civil Index... a civil cert will have a few more details, such as occupations for bride, groom and fathers, and possibly ages for Joseph and Lizzie.
Name: Joseph Finn
Registration district: Dublin South
Record type: Marriage
quarter and year: Jul - Sep 1888
Volume: 2 / Page: 613
Name: Lizzie Kearns
[same index details]
Shane