252 PROFESSOR OWEN ON THE GENUS DINORNIS. 
nates in a point. The entire length of the bone is 9 inches 6 lines (see Pl. LVIII., of 
the skeleton). 
§ 12. Metatarse. 
‘The form and dimensions of this bone are given in Pl. LVII. figs. 1-4; and the 
degree in which it resembles in its proportions the metatarse of previously described 
species may be inferred from the subjoined Table of Admeasurements of Metatarsal 
Bones in the Genus Dinornis :— 
Breadth. 
Length. 
Middle of Proximal end Distal end of 
shaft. of shaft. shaft. 
in. lin. in. lin, in. lin. in. lin. 
1. Dinornis maximus ........ 20 0 3° (0 5 6 (oh) 
2. giganteus .......... 18 6 2 0 4 0 5 0 
3. MODUS EUS! eramye eel nteveratsre 15 9 1 10 4 6 5 6 
4. ATP ENE fereaisteicleneyfeperele 13 6 INers/ 3 5 4 0 
5. —— gracilis ............ 12 9 1 10 3.3 4 2 
6. struthioides ........ 12 0 1 6 3 8 4 0 
7. dromioides .......... 10 0 13 2 6 3 3 
8. elephantopus ........ 9 4 2 6 4.5 5.4 
9. CrAssOs, Te See es 8 9 19 33 4 0 
10. —— casuarinus .......... ‘ee ay f 3 0 3 10 
11. —— gravis .............. at 2 0 3 3 4 0 
12. ——didinus ............ 7 6 1 6 eg 3 0 
18. —— didiformis .......... 6 1L 13 Dian? 3.0 
14, PLUS tetas rale vis cee ere 2 6 3 ile el 1 10 Oe Th 
15. geranoides 5... ...... 5 11 ab Ue 2 4 3 0 
16. GRREGOS peck. acres boyetcas tops 5 0 ibe) 2 0 2 4 
From this Table it will be seen that Dinornis parvus is intermediate between the 
slender sorts, represented by D. giganteus and D. struthioides, and the thicker sorts, 
represented by D. elephantopus and D. gravis, in the proportion of its metatarsal 
bones. 
The entocondylar surface (Pl. LVII. figs. 1, 2, a) is, as usual, deeper and narrower 
than the ectocondylar one (4); the intercondylar rising (c) terminates anteriorly in a 
well-marked lever-prominence, over which the tendon of the ‘tibialis anticus’ glides 
prior to its insertion at the rough depression (fig. 1,4), which is relatively less, but 
deeper and better-defined, than in Dinornis geranoides. The entocalcaneal process 
(ib. fig. 2, m) rises higher than the ectocalcaneal one (p). The ectogastrocnemial tract 
(fig. 4, h) is more ridge-like and shorter than usual; the entogastrocnemial surface 
(fig. 8, g) is more distally placed, is roughened, but not raised, for the insertion of that 
muscle. Neither ent- nor ectinterosseal canals are marked, or open, on the back 
surface of the bone (fig. 2), as in Dinornis gravis’; but the antinterosseal depression is 
* Trans. Zool. Soc. vol. viii. pl. lviii. fig. 2. 
