aiGANTIC SPECIES OF APTERYGIAN BIBD. 169 



phalanx of the middle toe belongmg to the right leg ; however, on the surface 

 articulating with the metatarse, it does not show the central ridge so pronounced in 

 the Dinornithidse, but only indicated in Apteryx. The second (fig. 9) is an ungual 

 phalanx resembling, like the former, that of Apteryx ; it compares best with the 

 outside ungual phalanx of the right foot. 



DESCRIPTION OF PLATE XXX. 



Megalajjteryx hectori. (Natural size.) 



Fig. 1. Right tarso-metatarsus, front view. 



2. Left tarso-metatarsus, upper or condylar surface. 



3. Right tibia, front view. 



4. Left tibia, upper articular surface. 



5. Right femur, inner side view. 



6. Left femur, upper articular surface. 



7. Left fibula, outer view. 



8. Phalanx. 



9. Ungual phalanx. 



Apteryx australis. (Natural size.) 



Fig. 10. Left femur, inner view. 



11. Left femur, upper articular surface. 



2c2 



