PLATE III. 



Fig. 1 . Seventh dorsal vertebra, front view. 



Fig. 9, Seventh dorsal vertebra, back view. 



Fig. 3. Seventh dorsal vertebra, side view. 



Fig. 4. Sixteenth dorsal vertebra, front view. 



Fig. 5. Sixteenth dorsal vertebra, back view. 



All the figures are drawn, minus the haemal arch, one-fourth natural size. 



d. Articular tubercle for the head of the rib ; «', neurapophysial articular 

 surface for the neck of the rib ; d, diapophysis, d! , diapophysial articular 

 surface for tubercle of rib ; m, metapophysis, mz', inetapophysial arti- 

 cular surface ; a, anapophysis, a', anapophysial articular surface ; /;, par- 

 apophysis, pa, parapophysial articular surface ; 2, anterior, z', posterior, 

 mz, mid-anterior, mz', mid-posterior, zygapophyses ; ns, neural spine. 



