PLATE X. 



Fig. 1. Head and neck of the fifteenth dorsal rib, upper view. 

 Fig. 2. Head and neck of the sixteenth dorsal rib, upper view. 

 Fig. 3. Head and neck of the fifteenth dorsal rib, side. view. 



One-half natural size ; n", neurapophysial articular surface. 

 Fig. 4. The thirteenth dorsal vertebra. 

 Fig. 5. The sixteenth dorsal vertebra. 



Fig. 6. The first caudal vertebra, under view, minus the haemal arch. 

 Fig. 7- The clavicle. 



One-fourth natural size ; c', articular surface for the head of the rib ; 



«', neurapophysial surface for the neck of the rib ; p, parapophysis ; 



d, diapophysis ; a, anapophysis, a', its articular surface ; pi, pleurapo- 



physis ; hi/, hypapophysis ; z, anterior, *', posterior zygapophysis ; ns, 



neural spine. 



