340 RATIT^. 



as the lil'th dorsal of Dinornis maximus. The contrast to 

 the fourth dorsal of that species is very striking. 



32159 C. A rather larger specimen of the fourth dorsal vertebra. 



32172 c. A similar foiirth dorsal vertebra, wanting the neural 

 spine. 



3215611. A smaller fourth dorsal vertebra, wanting the neural 

 spine. 



32156 i. A small vertebra which is probably an abnormal specimen 

 of the fourth dorsal. 



32160 a. A large fourth dorsal vertebra, wanting part of the neural 



spine. The anterior haemal process is very small. 



32175 a. A fourth dorsal vertebra, with the neural and hjemal 

 spines imperfect. The anterior pneumatic foramen is 

 small. 



32175 b. A smaller fourth dorsal vertebra. The hsemal carina 

 has the normal fore-and-aft processes. 



32172 d. A fourth dorsal vertebra. The ha?mal carina is slight, 

 and at the anterior extremity divides into two tubercles. 



32159. A small fourth dorsal vertebra, with a sharp haemal carina. 



32171 a. A dorsal vertebra resembling the fourth in general cha- 

 racters, but with the haemal carina very slightly developed. 



32160 b. A dorsal vertebra, without the neural spine, presenting 

 characters intermediate between those of the normal fourth 

 and iifth dorsals. The posterior face of the centrum has 

 the narrow form of the fourth dorsal, but in its deep vertical 

 concavity and slight transverse convexity resembles the 

 fifth, to which it also approximates in the absence of a 

 haemal carina. 



32160 c. A nearly similar specimen, showing traces of a hsemal 

 carina. 



32160 d. A somewhat similar specimen, having a distinct haemal 

 carina, but in the form of the posterior face of the centrum 

 approximating still more to the fifth dorsal. 



32160 e. A somewhat similar vertebra. There is no distinct haemal 



