In The Hitchhiker's Guide to the Galaxy when Arthur searches The Guide for the article on Earth, the following exchange takes place:
The screen flashed and swirled and resolved in to a page of print. Arthur stared at it.
"It doesn't have an entry!" he burst out.
Ford looked over his shoulder.
"Yes it does," he said, "down there, see at the bottom of the screen, just under Eccentrica Gallumbits, the triple-breasted whore of Eroticon 6."
Arthur followed Ford's finger, and saw where it was pointing. For a moment it still didn't register, then his mind nearly blew up.
"What? Harmless? Is that all it's got to say? Harmless! One word!"
I had always assumed by "under Eccentrica Gallumbits, the triple-breasted whore of Eroticon 6" it had meant that "Harmless" was an opinion of the Earth written by Eccentrica Gallumbits (as in under, definition 5:
beneath the heading or within the category of). However, the Hitchhiker Wiki states:
In chapter 7 of the book The Hitchhiker's Guide to the Galaxy, because her entry in The Hitchhiker's Guide to the Galaxy is just above that of the Earth's.
However, I'm not sure I agree with this interpretation as 'Earth' comes before 'Eccentrica' alphabetically, so why would it appear second? Additionally, this line is from chapter 6, not 7, so it could just be flat out wrong.
The audiobook version read by Stephen Fry makes this more confusing, as that version has Earth "just above Eccentrica Gallumbits", which would fix my alphabetical issue, but it could also be a mistake, as the other audio book read by Douglas Adams himself also says "under".
Is there any canon source which can confirm which interpretation is correct?