DINORNITHID.E. 



339 



33156 d. A larger and slightly imperfect third dorsal vertebra. 



32156 f. A very large imperfect third dorsal vertebra, wanting the 

 neural spine and part of the arch. This and the next 

 are by far the largest vertebrte in the collection, and may 

 perhaps be referable to P. immanis. In the anterior face 

 of the centrum the vertical diameter is 0,043, and the 

 transverse 0,044. 



33157 C. A still larger imperfect third dorsal vertebra. 



32156 g. A small dorsal vertebra, which may be an abnormal ex- 



ample of the third. A slit-like pneumatic foramen is 

 situated between the transverse process and the rib-facet. 

 If this and the four following specimens be not abnormal 

 examples of the third dorsal, they must indicate that in 

 Pacliyornis there must be occasionally or always a vertebra 

 interposed between those corresponding to the third and 

 fourth dorsals of Anomalopteryx parva. The low and 

 wide shape of the posterior face of the centrum at onco 

 distinguishes this and the following specimens from the 

 fourth dorsal. 



32172 a. A nearly similar specimen. The htemal carina is pro- 

 duced forwards into a hook-like process. 



32157 d. Another nearly similar vertebra. Here the anterior pneu- 



matic foramen has become considerably larger. 



32159 b. A similar but larger imperfect vertebra. 



32156 e. An apparently abnormal dorsal vertebra, agreeing with 

 the third in the absence of an anterior pneumatic foramen, 

 but resembling the fourth in the height and narrowness 

 of the posterior face of the centrum. 



32172 b. A vertebra corresponding to the fourth dorsal of Anoma- 

 lopteryx parva. The centrum is extremely compressed, 

 with its posterior face very tall and narrow ; the anterior 

 pneumatic foramen is large, with its anterior border 

 forming a sharp ridge connecting the front line of the 

 rib-facet with that of the transverse i)rocess. The haemal 

 carina is strongly developed, and terminates in fore-and- 

 aft descending processes, so that the inferior profile is 

 arched. The specimen resembles the one figured in 

 Owen's ' Extinct Birds of New Zealand," p. 412. fig. 30, 



