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PACHYORNIS IMMANISLYD.
- Pachyornis immanis Lydekker, Cat. Foss. Birds Brit. Mus., p. 343 (1891).
This is the most bulky and largest member of the genus, and also of all Dinornithidae. Its living parallel to-day is Casuarius philipi Rothschild, which, though by no means the tallest species of Casuarius, is the most bulky, and has the shortest and stoutest legs—the tarso-metatarsus is specially short and stout.
The type tarso-metatarsus measures 228 mm. = 9.9 inches> width (shaft) 84 mm. = 3.3 inches, while the type tarso-metatarsus of elephantopus measures 239 mm. = 9.4 inches and 65 mm. = 2.55 inches.
The skull is much more depressed than in elephantopus and with deeper temporal fossae and a shorter post orbital region.
Type: No. A168 British Museum.
Habitat: Middle Island, New Zealand.
PACHYORNIS ROTHSCHILDILYD.
- Pachyornis rothschildi Lydekker, P.Z.S. 1891, pp. 479-482, pl. XXXVIII.
The bones in the Tring Museum, which form the type of this species, unfortunately have no history and their locality is unknown. It differs from the other species of the genus by the slenderer proportions of the tibio-tarsus, which is 22 inches long by 2.9 inches distal width, as opposed to 24 inches by 4.2 in elephantopus and 20 inches by 3.5 in ponderosus, the two nearest in size. Femur: length 10.6 as opposed to 12.5 inches in elephantopus.
