252 



PKOFESSOE OWEN ON THE GENUS DINORMS. 



nates in a point. The entire length of the bone is 9 inches 6 lines (see PI. 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 : — 



From this Table it will be seen that Dinornis parvus is intermediate between the 

 slender sorts, represented by B. giganteus and B. struthioides, and the thicker sorts, 

 represented by D. elephantopus and D. gravis, ia the proportion of its metatarsal 

 bones. 



The entocondylar surface (PI. LVII. figs. 1, 2, a) is, as usual, deeper and narrower 

 than the ectocondylar one {b) ; 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, k), which is relatively less, but 

 deeper and better-defined, than in Dinornis geranoides. The entocalcaneal process 

 (ib. fig. 2, n) rises higher than the ectocalcaneal one {p). The ectogastrocnemial tract 

 (fig. 4, h) is more ridge-like and shorter than usual ; the entogastrocnemial surface 

 (iig. 3, 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 antiuterosseal depression is 



' Trans. Zool. Soc. vol. viii. pi. Iviii. fig. 2. 



