580 MOA 
tibia (fig. 1, B) and tarso-metatarsus (fig. 2, B), and also by the 
broad and flattened beak, the apparent absence of the hallux, and 
the width and convexity of the sternum. The typical D. nove- 
cealandix (including D. giganteus 
and D. ingens ') is mainly confined 
to the North Island, and is one 
of the largest species, the length 
of the tibia of the presumed 
female being 35 inches. In the 
South Island this Moa was re- 
presented by the closely-allied 
D. maximus (D. robustus, in part), 
which is the largest of all the 
species, having a tibia measuring 
39 inches, and probably reaching 
a height of 12 feet. D. gracilis 
(fig. 1, B) and D.  struthioides 
(fig. 2, B) were considerably 
smaller forms, occurring in both 
islands, and referred by Hutton 
to a distinct subgenus (7ylo- 
Fig. 2, Rigur Tarso-meratTarsus of Pachyornis pleryz). 
clephantopus (A), and Dinornis struthioides Megalapteryz, Von Haast, 
ee, Anterior aspect. (From the same originally referred to the Aptery- 
gid, is represented by two much 
smaller and imperfectly-known forms from the South Island, 
characterized by the extreme slenderness and length of the femur 
and tibia (fig. 1, C), and the shorter tarso-metatarsus. 
Anomalopteryx, Reichenbach (= Meionornis, Haast) is typically 
represented by the small D. didiformis, Owen, and, in our opinion, 
may be conveniently taken to include all the smaller species of the 
group, although Capt. Hutton prefers to separate Owen’s D. dro- 
mexoides as Palapteryx, D. curtus as Cela, and D. didinus as Mesopterya. 
On the other hand, Owen’s D. casuarinus, which Von Haast 
included in Meionornis, is placed by Capt. Hutton with Hmeus crassus. 
Whether included under one or more generic headings, all these 
forms are characterized by having the tibia and tarso-metatarsus 
considerably shorter and stouter than in Dinornis, while the beak is 
narrow and more or less pointed, the hallux present (as in the 
following genera), and the sternum (fig. 3, A) very long and 
narrow. There is great difficulty in correctly identifying the 
various members of this group with the species named by Owen 
on the evidence of detached bones. 4. casuarina, with a tibia 
measuring 19 inches in length, is the largest form, and 4. (Cela) 
1 Tf these forms be regarded as distinct, the name novex-zealandiz should be 
adopted for the latter. 
