391 



2179. A posterior lumbar vertebra. 



It shows the elongation of the transverse process by the anchylosed pleurapophysis, and 

 the reduction of the metapophyses to rudimentary tubercles. 



2180. The sacrum. 



It consists of four anchylosed vertebrae : the articular surface for the ilium is almost con- 

 fined to the transverse process of the first of these vertebrae : those of the last are the long- 

 est. The sacral nerves directly perforate the neurapophyses of the last two vertebrae, ante- 

 rior to the vacuity left between the bases of the transverse processes. The neural arches of 

 the first six caudal vertebras are similarly perforated. 



2181. An anterior caudal vertebra. 



The long depressed transverse processes are slightly expanded at their extremities. 



2182. The right scapula. 



It is narrow in proportion to its length, and the acromion bends slightly forwards to meet 

 the clavicle. 



2183. The right clavicle. 



2184. The right humerus. 



The deltoid ridge is strongly marked by a tuberosity. Both the intercondyloid space and 

 inner condyle are imperforate. 



2185. The right ulna. 2186. The right radius. 



2187. Two ungual phalanges. 2188. The right os innominatum. 



2189. The right femur. 



A third trochanter is developed from a ridge extending along the outer side of the bone. 



2190. The right tibia and fibula. 



The fibula is anchylosed to the tibia by its lower third. 



2191. The patella. 2192. The astragalus. 



