No, sorry -- I'm not used to call anything else than Meyer's work an 'index' in the context of Reichenbach.
Reichenbach's publication process is a bit of a nightmare.
The two pages reproduced by Bruce
et al. (which they indeed call, 'index pages', so I'll have to live with it, I guess; to my mind, an index is organized alphabetically, which is not the case here) list the contents of a set of pigeon plates that was published in 1851 -- the "Novitiae: Columbariae" in
Meyer's Index, where
novitiae means 'novelties'. A first set of pigeon plates (Meyer's "Columbariae") and a list of its contents (Meyer's "Synopsis: Columbariae") had been published (fide Meyer) in 1847/48; the
novitiae were intended to be interspersed among the plates of the initial set. Significantly later, in 1861/62, Reichenbach published a textbook about pigeons, which appeared in two parts (Meyer's "Vollständige Naturgeschichte der Tauben (erste Hälfte), Text." and "Neuentdeckte Taubenvögel und Nachtrag";
BHL's copy only has the first part,
a complete copy can be seen on the Teyler's Museum website), and also an additional 9 plates (which appeared with the second part, and which BHL does not have either).
Several of the groups covered in Reichenbach's publications have had a similar history (an initial set of plates with a "synopsis" listing its contents, a set of plates showing novelties with its own list of contents, a separate main text volume). In some cases, the lists of contents appear to have been bound with the plates (e.g., Meyer's "Novitiae: Grallatores et Rasores" in
this volume on the Teyler's Museum website); this was not the case in any of the volumes scanned by BHL, however. In other cases, lists of contents have been bound together and separately from the plates (e.g., Meyer's "Novitiae: Natatores", "Novitiae: Grallatores et Rasores", and "Synopsis: Natatores, Grallatores et Rasores" in
this Google Books volume).
For pigeons, I have never seen the initial "synopsis" (if anyone finds it, I'd be more than interested), and the only place I'm aware of, where the list of contents of the
novitiae can be seen, is in Bruce
et al's paper. The plates are
on BHL (lacking 9 the final ones), and on the
Teyler's Museum website (with the 9 final ones included -- most of them at the end of the volume). Note that the Teyler's Museum plates have no names on them; the names on the BHL plate are assumed to have been added by hand, presumably being copied from the lists of contents, which may then simply have been discarded.
