PEOPESSOE OWEN ON THE GENUS DINOENIS. ' 261 



fossorial anterior digits. But such aliment was doubtless varied by other nutritious 

 substances. 



After close comparison of the dried head of Dinornis didinus with those in the 

 existing Struthious birds, the characters of which are so admirably given in the 

 illustrations of Mr. Sclater's excellent memoir in vol. iv. of the ' Transactions ' of the 

 Zoological Society, pis. Ixvii. A-lxxvi., pp. 353-364, the Moa is found to repeat most 

 closely, in the form and proportions of the beak, and in the shape, relative positions, 

 and dimensions of the narial, orbital, and auditory apertures, the Emus of the 

 Australian continent. 



DESCRIPTION OF THE PLATES. 



PLATE LIX. 



Head of Dinornis didinus. 



Fig. 1. Head, with dried integument and portion of neck, left-side view. 



Fig. 2. Head, with dried integument and portion of neck, right-side view. 



Fig. 3. Head, upper view. 



Fig. 4. Hypobranchial tongue-bones, and portion of dried tongue. 



Fig. 5. Area of tracheal ring. 



PLATE LX. 



Foot of Dinornis didinus. 



Fig. 1. Tibial side view of the foot. 



Fig. 2. A metatarsal feather from the same side. 



PLATE LXI. 



Foot of Dinornis didinus. 

 Fig. 1. Fibular side view of the foot. 

 Fig. 2. A metatarsal feather from the same side. 



(All the figures are of the natural size.) 



