PLATE VIII. 



Fig. 1. The second caudal vertebra, back view. 



Fig. 2. The second caudal vertebra, under view, minus the haemal arch. 



Fig. 3. The eleventh caudal vertebra, back view. 



Fig. 4. The eleventh caudal vertebra, side view. 



Fig. 5. The eleventh caudal vertebra, upper view. 



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



Fig. 7- The thirteenth caudal vertebra, upper view. 



Fig. 8. The sixteenth caudal vertebra, upper view. 



Fig. 9. The sixteenth caudal vertebra, under view. 



Fig. 10. The seventeenth caudal vertebra, upper view. 



Fig. 11. The seventeenth caudal vertebra, under view. 



Fig. 12. The eighteenth caudal vertebra, back view. 



Fig. 13. The eighteenth caudal vertebra, front view. 



One-fourth natural size ; c, centrum ; hy, anterior, hy', posterior hypapo- 

 physes ; h, their haemal articular surface ; n, neural arch and neurapo- 

 physes ; ns, neural spine; d, diapophysis ; pi, pleurapophysis ; m, met- 

 apophysis ; z, anterior, z', posterior zygapophysis ; h, haemal arch, hy', 

 (fig. 1) its anterior hypapophysial articular surface, hy", its posterior hyp- 

 apophysial surface ; hs, haemal spine. 



