348 
I begin with the metatarsus (Pl. XLII. a), as this bone usually yields the best charac- 
teristics of the kind of Moa to which it belonged. . 
In length it comes nearest to the metatarsus of Dinornis casuarinus', in breadth to 
that of Dinornis crassus?; it is, however, shorter by half an inch than the former, and 
broader by five lines than the latter; and as Dinornis crassus was differentiated from 
Din. casuarinus by the greater relative breadth of the metatarsus, this differential cha- 
racter applies still more strongly to the present species, inasmuch as the entire bone is 
shorter than that of Dinornis casuarinus, instead of being longer as is the metatarsus 
of Dinornis crassus. 
The length of the metatarsus in Dinornis gravis is 7 inches 9 lines, the least breadth 
of the shaft is 2 inches 1 line, the breadth of the proximal end is 3 inches 2 lines or 
3 inches 3 lines, that of the distal end is 4 inches 2 lines, the thickness or antero- 
posterior diameter of the middle of the shaft is 1 inch, its circumference is 5 inches. 
A comparison of these dimensions with those of the two species of Dinornis to which 
the present comes nearest, in the Table of Admeasurements, p. 586, will exemplify the 
chief metatarsal characteristics of Dinornis gravis. 
In general configuration, as in robustness of proportion, though exceeding in the 
latter respect, the present metatarsus most resembles that of Dinornis crassus, I note 
the following differences, which are repeated in specimens of the metatarsus from two 
individuals of Din. gravis from remote localities in the South Island of New Zealand. 
The intercondylar rising (Pl. XLII. a, figs. 1, 3, ¢) is but slightly developed anteriorly 
im any Dinornis, but it has more claims to be considered a “ process” in Din. gravis 
than in Din. crassus; the entometatarsal tuberosity (ib. figs. 1 & 3, e) is more pro- 
minent, and is longer. 
In the antinterosseal depression (ib. fig. 1, 7) the upper common anterior orifice (ib. 2) 
of the interosseal canals is less speedily divided into the entinterosseal (ib. fig. 2, 2) and 
ectinterosseal (ib. m) canals than in Dinornis crassus; the rough depression below for 
the tibialis anticus (ib. fig. 1, 0) is deeper and better-defined for its size in Dinornis 
gravis. 
The calcaneal groove (ib. figs. 2, 3, u) is narrower and deeper in Din. gravis; and the 
entocalcaneal process (ib. ib. 7) is rather less prominent. ‘The outer depression on the 
ectocalcaneal process (ib. s) is better marked, and in one metatarsal specimen of Din, 
gravis appears as a shallow longitudinal groove. 
The posterior orifice of the entinterosseal canal (/) does not open into a depression of 
the bone; that into which the ectinterosseal canal (m) opens is wide and shallow. 
The interval between these two orifices in one of the specimens is greater in Din. 
gravis than in the longer metatarsus of Dinornis crassus: in the other it is as great. 
As in Dinornis crassus, the places of insertion of the strong 
formed by the confluence of the tendons of the gastrocnem 
* Ante, p. 131, Pl. XL, fig. 3. 
ligamentous aponeurosis 
tus internus and gastro- 
* Ante, p, 133, Pl. XL. fig. 4, 

