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PROFESSOR OWEN ON THE GENUS DINORNIS. 
DESCRIPTION OF THE PLATES. 
PLATE XL. 
Aptornis defossor. 
. Side view of skull. 
. Top view of skull. 
. Base view of skull (without mandible). 
. Side view of mandible of Aphanapteryx (ex A. Milne-Edwards, ‘ Ibis, 
July 1869). 
PLATE XLI. 
Aptornis defossor. 
. Back view of cranium. 
. Inner side view of tympanic bone. 
Mandibular articular surface of tympanic bone. 
Outer side view of tympanic bone. 
4a. Hind view of palatines. 
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Upper view of mandible of Aphanapteryax (ea ‘ Ibis,’ &c.). 
Upper view of mandible. 
Under view of mandible. 
Hind surface of ramus of mandible. 
Front view of tibia. 
10. Side view of fibula. 
10a. Upper end of fibula. 
12. Hind view of palatine bones. 
PLATE XLII. 
Aptornis otidiformis. 
. Pelvis, from above, or dorsal aspect. 
. Pelvis, from below, or ventral aspect. 
. Pelvis, from before, or front view of first sacral vertebra and iliae bones. 
Cnemiornis calcitrans. 
. Front view of mutilated first sacral vertebra and iliac bones. 
Notornis mantellii. 
. Fore part of sacrum and iliac bones, from below. 
. Front view of first sacral vertebra and iliac bones. 
