230 p.\TrT.T=). 



The largest species. The tibio-tarsus and torso-metatarsus are 

 relatively stouter than in the female of D, novce-zealandice; the 

 distal extremity of the former being very wide, and the trochlefc of 

 the latter much expanded. The tibio-tarsiis Tisuallyhas a long and 

 nearly horizontal extensor bridge ; and its distal width is about 

 one seventh of the length. The length of the tibio-tarsus may 

 reach 0,990 (39 inches) in the presumed female, and 0,822 (32-5 

 inches) in the male. 



Bworvis rohvstvs was established as a variety of D. iiujaia 



Fig. 58. 



Dinornithidm. — The riglit tarso-metatarsus. I. A. Diiwrnis maociimis; 

 '• S.*_Dznornis struthioides ; C. Anomalopferyx casuarina ; D. Emeus crassus. 



on the evidence of " the bones of the hind extremity from 

 the [so-called] Middle Island, which agree in length with those 

 of D. ingens," but are relatively thicker'. The length of the 

 type tarso-metatarsus is 0,368 (14-5 inches)'-. These specimens 

 were never properly described or figured. The bones subsequently 

 described by Owen under the name of D. robustus are of much 

 larger dimensions (vide infra, p. 234), and there is no evidence for 

 referring them to the same form as the type on which that species 

 was established. 



' See Owen, Trans. Zool. SoCiVol. iii. p. 321. 

 '^ Owen, op. cit. p. 329. 



