_Dinornis rheides_ Owen, Trans. Zool. Soc. IV, p. 8 (1850--partim).
_Syornis rheides_ Hutton, Trans. N.Z. Inst. XXIV, p. 131 (1892).
This is a very difficult form to consider, as the type bones consisted of
those of three different forms. Whether Professor Owen, were he now alive,
would concur in Captain Hutton's treatment is very questionable, and I
doubt if it ought not to be united to _Emeus crassus_, while Haast united
it to _P. gravis_. I have kept it separate as no bones of a single
individual united are known, and it might prove sufficiently distinct if a
good skeleton were obtained. The type bones were sent from Waikawaite,
Middle Island, by Colonel Wakefield, in 1849.
Habitat: Middle Island, New Zealand.