[Janice D. Soderling]

Kristin, you would perhaps get more response if you introduced yourself and said more clearly why you were asking or if you had participated in past discussions and the other members "knew you".

When I first read this I thought you were probably a kid wanting a quick fix for a high school or college paper due tomorrow. (it happens.)

But I see you have a blog and other creds.

In Lewis Turco's Book of Forms p.94, edition before the brand-new one, he precedes his list of form definitions thus:

One final note: Many poems are "regular", that is, traditionally formal, but the specific combinations of stanza pattern, line lengths, rhyme schemes, and meters have sometimes been created by the poet for that specific poem. Such patterns are called nonce forms.

He mentions also under the entry for "canzone" (...) the third stanza in each strophe (the sirima or cauda) is structurally different from the piedi, but the structures of piedi and sirma are nonce forms: the poet's invention.

There are seven other references in Mr. Turco's book.

Have you tried the library?