Eric Schissel wrote:

>I believe there's some discussion of this in the notes to the Marco Polo
>recording of the three movements that were known at the time of the fine d
>minor first symphony.  Though the conjecture that the 3rd is actually die
>Seejungfrau, I picked up somewhere else- Groves' perhaps (not sure which
>one?)?

According to Antony Beaumont in his recent biography of Zemlinsky:

Symphony #1 in E minor (movts 2 & 3 only, 1891)
Symphony #2 in D minor (1892-93)
Symphony #3 in Bb major (1897)

Perhaps that can be of help?

Christoph Sickinger
Somerset