454 Proceedings of the Royal Society 
faces. The antero-posterior diameter of each body was markedly 
greater than the transverse. In the more anterior vertebrae the 
transverse process was distinctly larger than the width of the body, 
but in the more posterior they were almost equal. The base of this 
process sprang from the anterior half of the side of the body in 
series with the transverse processes of the last dorsals ; the processes 
projected outwards and a little forwards, and the free end was 
convex. The spines were long, laterally compressed and sloped 
slightly backwards. The length of the 10th lumbar spine was 10 
inches. The height of the last lumbar vertebra was 15 inches. A 
pair of broad lamelliform metapophyses projected forwards from the 
anterior border of the laminae close to the root of the spine, but did 
not articulate with the vertebra in front ; from the anterior edge 
of the laminae of which a pair of much smaller processes projected 
backwards. The neural arches sprang from the centre of the bodies. 
Caudal Vertebrae . — Twelve only were present, seven being miss- 
ing. They diminished in size from before backwards. The 1st 
was 14 inches high, and 10 inches between the tips of its trans- 
verse processes. In the anterior three the spines were massive, and 
then rapidly diminished in size to the 11th, in which the spine was 
a slight ridge, and the neural canal admitted only a crow quill. 
The transverse processes were strong in the anterior five, and then 
rapidly diminished in size, so that in the 9tli only a faint ridge was 
seen. Metapophyses, which were n on-articular, projected forwards 
from the anterior edge of the lamina; of the anterior nine, but none 
from the posterior edge. The 1st caudal was transitional in its 
characters between the lumbar and caudal series, for whilst the 
ventral surface of the body was keeled in its anterior two-thirds, it 
was grooved in the posterior third, and possessed an articulation for 
the 1st chevron bone. The vertebra behind the first, so far as they 
were present, were grooved ventrally, and on at least nine bodies 
articulations for chevron bones were present. Only six chevron 
bones reached me. No vertical foramen was present in the root of 
a transverse process. 
Ribs . — Of the ten pairs of ribs only four pairs were entire, the rest 
had been broken or sawn across. The first was the broadest, and 
measured 12 inches in a straight line. The anterior seven had each a 
head, neck, and tubercle, but in the 1st the neck was stunted. The 
