_Euryapteryx ponderosus_ Hutton, Trans. N.Z. Inst., p. 137 (1892).
This species is slightly smaller than _P. elephantopus_, the
tarso-metatarsus varying from 8.25 to 8.0 inches, as opposed to from 9.4 to
9.25 in _elephantopus_; the tibio-tarsus varies from 18.5 to 18.6, as
opposed to 24 to 24.1; femur, 10, as opposed to 13 to 11.8.
The skull can be distinguished by the processes at the hinder angles of the
basi-sphenoid, which are higher and rounder in _ponderosus_, flatter and
more elongated in _elephantopus_. Type: Hamilton.
Habitat: Middle Island, New Zealand.
Cast of egg in Tring Museum, taken from specimen in Otago Museum, dredged
up in 1901 in the Molyneux River, also incomplete skeleton from Kapua
Swamps.