44 KANSAS UNIVERSITY QUARTERLY. 



in the lion, they have a median grove at the base and are rounded 

 near the extremity. 



Seven fairly complete lumbar vertebrje are preserved in the two 

 specimens, two of which are duplicates. The processes diverge 

 less from the median line than in the lion, the postzygapophyses 

 are short and stout, and lie close together with only a narrow notch 

 between them. Their articular facets are directed more outward 

 than downward. The anterior zygapophyses become somewhat 

 longer toward the caudal end of the series. The articulating 

 facets are nearly opposed to each other and are deeply concave ver- 

 tically. The anterior margins of the lamina are less deeply concave 

 than in the lion. The neural spines are broad, rising far back 

 between the posterior zygapophyses and extending forward to the 

 anterior border of the arch. The metapophyses are fairly well 

 developed, and the anapophyses are as prominent as in the lion. 



The saci'ani is composed of three vertebrae. It is fourteen milli- 

 meters longer than that of the lion, but narrower at the anterior end, 

 and the transverse processes are shorter and stouter. The centra are 

 so completely ossified that all traces of their union have disap- 

 peared. The anterior zygapophyses are long and stout with their 

 opposed faces concave. Those of the second and third vertebrae 

 are also prominent. Tlie first spine is twice as strong as that in 

 the lion, and is directed backward. 



The eaiidalis are not only much longer and stronger than those 

 of the lion, but the processes are better developed and a larger 

 number have a complete neural arch. The anterior eleven are 

 preserved in the small specimen. The first caudal has a neural 

 spine as strong as the first sacral in the lion, and the third has a 

 distinct rudiment. The zygapophyses are articulated as far back 

 as between the eighth and ninth. The neural canal is present 

 in the tenth. The transverse processes are strong in the first and 

 second, become changed into a broad flat expansion in the sixth, 

 which in turn gives place to an anterior and a posterior lateral 

 expansion in the tenth. In the fifth and following vertebrae the 

 posterior intervertebral notch is less deep, and, a short distance in 

 front of the margin, there appears on each side a small foramen 

 perforating the pedicle. Doubtless this foramen was for the pass- 

 age of the nerve and vessels which, from the flexibility of the tail 

 might otherwise have been subject to compression. 



In the restoration of the remainder of the tail, I have figured the 

 same number of vertebrae as in the lion, giving them as nearly as 

 could be determined, proportions corresponding to the anterior 



