Habitat: Middle Island, New Zealand.
PACHYORNIS VALGUS (HUTT.)
Euryapteryx valgus Hutton, Trans. N.Z. Inst. XXV, p. 12 (1893).
This species is at once distinguishable from all others by the extraordinary internal expansion of the distal end of the tibio-tarsus. The tarso-metatarsus is 8.5 inches = 216 mm. in length and the proximal width 3.5 inches = 89 mm., and does not differ much from crassus except in the great proximal width, necessary to articulate with the distal internal expansion described above.
The type came from Enfield in New Zealand.
Habitat: Middle Island, New Zealand.
PACHYORNIS PYGMAEUS (HUTT.)
Euryapteryx pygmaeus Hutton, Trans. N.Z. Inst. XXIV, p. 739 (1892).
As implied by its name, this is the smallest species of Pachyornis, the tarso-metatarsus only measuring 6 inches in length. The type came from Takaka.