Ellipsis or Ellipses?

Inspired by this question: What is the correct term to use when describing the "three dots" (. . .), ellipsis or ellipses? And are either of these terms considered plural?

For example, if I wanted to say "the x is/are in the wrong location", which sentence is correct?

1. The ellipsis is in the wrong location.
2. The ellipsis are in the wrong location.
3. The ellipses is in the wrong location.
4. The ellipses are in the wrong location.

My gut instinct would be #4, with #1 a close second. #3 seems likely to be wrong, and #2 is a wild card.

Solution 1:

It is ellipsis because the three dots (. . .) are considered a single punctuation mark. The Cambridge Guide to English Usage says this:

Both grammarians and editors make use of this term. In grammar, ellipsis means the omission of a word or words which would complete or clarify the sentence. In punctuation practice, ellipsis refers to the mark, usually a set of three dots (. . .), which shows where something has been consciously omitted from a quotation.

Edit: You might say 'the ellipsis mark is in the wrong location' to avoid any ambiguity.