I'm struggling to understand how the site works, Elizabeth. The bit I was looking at seems to relate to rolls beginning C78 but I don't know how National Archives cataloguing works (or even if that has anything to do with it).
On this page
http://aalt.law.uh.edu/C78_79.html under 1877 it has 'old part number 233' which might possibly relate to the 233 on your record summary? But that just links to dozens of thumbnail images.
Very confusing - I only stumbled across a document relating to someone on my tree by chance googling.