I 



Second. 



FIG. 81. 



First. 



Kinth. 



Fifteenth. 



Sixteenth. 



Third. 



Tenth. 



Fourth. 



Seventeenth. 



Fifth. 



Eleventh. 



Eighteenth. 



Nineteenth. 



Sixth. 



Twelfth. 



Seventh. 



Thirteenth. 



Eighth. 



Fourteenth. 



THE CAUDAL VERTEBRAE, VENTRAL ASPECT. 



