47 



263. The body and left transverse process of the third caudal vertebra. 



264. The body and both transverse processes of the fourth caudal vertebra. 



265. The conjoined hsemapophyses of the same vertebra. The posterior arti- 

 cular surface is developed upon the base of the left haemapophysis, but is 

 represented by a rough tuberosity on that of the right one. 



266. The body of the fifth caudal vertebra. 

 267> The hsemapophyses of the same vertebra. 



268. The body and neural arch of the sixth caudal vertebra. The two articular 

 surfaces for the hsemapophyses are present at the posterior part of the 

 under surface of the body of the vertebra : the anterior surfaces are re- 

 presented by two rough tubercles. 



269. The hsemapophyses of the same vertebra. 



270. The body and neural arch of the seventh caudal vertebra : the anterior 

 hsemal surfaces are represented by rough tubercles. 



271. The hsemapophyses of the same vertebra. 



272. The body and neural arch of the eighth caudal vertebra. 



273. The hsemapophyses of the same vertebra. 



274. The body and neural arch of the ninth caudal vertebra. 



275. The hsemapophyses of the same vertebra. 



276. The body and neural arch of the tenth caudal vertebra. 



277- A caudal vertebra from towards the posterior part of the tail ; the neural 

 spine is almost obsolete ; the articular surfaces of the anterior oblique 

 processes are rough, showing that the synovial capsules have been ex- 

 changed for ligamentous joints : only the left posterior haemal tubercle 

 supports a smooth articular surface : the neural arch is still entire and 

 perforated for the passage of the cauda equina. 



278. A caudal vertebra from near the end of the tail, apparently the fifteenth ; 



