﻿126 



PLEISTOCENE MAMMALIA. 



proximal end of the tibia in Felis, bnt passes upwards to the external face of the condyle 

 of the femur. 



In fig. 4 we have represented the distal end of a left fibula which resembles in every 

 respect, save that of size, the corresponding portion of the leonine or tigrine bone. It 

 presents externally a deep groove between two tuberosities, which, in the living animal, is 

 converted by a ligament into a canal for the tendon of the peronaeus longns (fig. 4, a). 

 The posterior tuberosity forms the external malleolus, behind which is a second groove 

 (fig. 4, c), deep and narrow, for the tendons of the peronsei brevis and tertius. Internally 

 we find a small concave articulation close to the epiphysial division, by which the bone is 

 attached laterally to the tibia,, and below this is a flat surface which articulates with the 

 outer side of the astragalus, and behind this, again, is a depression for one of the ligaments 

 which bind the fibula to the tarsus. 



From the immature state of the shaft we have been unable to institute a rigid com- 

 parison between it and those of the recent Eeles. 



Dr. Schmerling l gives a rough and slight figure of a portion of a fibula, and states in 

 the text that the upper portion is broken away ; his figure, therefore, must be that of the 

 external and posterior aspect of the distal end, together with about two thirds of the 

 shaft ; with this exception, we have met with no figure of the bone. 



§2/3. Measurements. — In the following table the superior massiveness of the 

 spelaean fibula is shown over those of the Lion and Tiger. 



Comparative Measurements. 





Felis . 



'pelaa. 



Felis leo. 



F. tigris. 



Taunton Museum. 



< 



s 



3 

 <U 



3 



§ 



M 



M . 



<N 



r-t 



l-H 



i 



3 

 ta 



3 



-5 



Figured shaft. 

 Sandford Hill. 



Figured distal arti- 

 culation. Sand- 

 ford Hill. 



1. Maximum length ' 



2. Minimum circumference 



1-25 



065 

 1-23 



11-15 

 0-85 

 035 

 1-30 

 060 

 1-10 



11-55 

 1-12 

 0-75 

 1-30 

 0-57 

 1-26 



100 



rio 



0-45 

 105 

 1-50 

 045 



3. Transverse measurement of proximal articulation 



4 . Vertical ditto 



5. Transverse measurement of proximal articulation 



6. Distal ditto 





1 'Oss. Foss. de Liege/ vol. ii, pi. xvi, fig. 4, p. 80. 



