]C) 



PLEISTOCENE MAMMALIA. 



as the cuboid, astragalus, &c., which we have figured ; it is at Taunton, with many others, 

 from the collection of Mr. Beard. The adult bones are from Bleadon and Sandford Hill, 

 and the same bone of young animals from Bleadon and Hutton. 



Naviculare, fig. 3. 



This bone, as its name denotes, is somewhat boat-shaped, the upper concave and 

 nearly circular surface forming the articulation for the astragalus (fig. 3, a), and the two 

 flat inferior surfaces, slightly inclined to each other (fig. 3, b, c), forming those for the 

 ecto- and meso-cuneiforms (figs. 5, 6), while a slightly rounded surface on the inner 

 side forms the proximal attachment for the endocuneiform (fig. 3, d). 



The hinder portion of the astragaline articulation is curved sharply upwards, and this 

 portion is supported by a process (forming, as far as this bone is concerned, the upper 

 border of the great tarsal groove for the peroneus longus), which is generally much 

 slighter in Fehs spelcBa than in lion or tiger, it being proportionately the largest in the 

 latter of these three animals. This forms the only appreciable difference observable in 

 this bone except size between them. 



It is distinguished from the corresponding bone of the bear by the somewhat greater 

 thickness and by the greater development of the upward prolongation of the astragaline 

 articulation, and also by the more decidedly circular form, as contrasted with the oblong 

 and somewhat angular plan of that of the latter animal. 



Measurements. 



Felii spelaia. 



Bleadon. 



75 



0-66 



■4,5 



5-00 



•24 



1-20 



•7.9 



r54 



•33 



1-27 



•94 



1-66 



0-G6 

 4-77 

 M5 

 1-50 

 l-.'6 

 1'51 



Lion, 

 W. A. S. 



•Go 

 •03 



•98 

 •38 

 •02 

 ■00 



Lion, 



Br. Mus. 



112 L. 



0^63 

 420 

 091 



1-17 

 102 

 110 



Lioness, 

 Col. Surg. 



0-59 



0^ 



3^98 



4- 



0-90 



0^ 



MO 



!■ 



100 



1^ 



091 



!• 



Tiger, 



Br. Mus. 



114 L. 



•90 

 •91 

 ■25 

 ■06 

 •00 



Tiger, 

 Col. Surg. 



056 

 4 35 

 097 

 120 

 TOO 

 083 



The bone figured is from Bleadon, and is at Taunton ; it probably belongs to the 

 same animal as the astragalus, calcaneum, &c. ; but it is from the right paw, and for 

 the sake of uniformity is reversed in the plate. Schmerling gives two good figures of this 

 bone, showing the proximal and internal surfaces (' Oss. foss. de Liege,' t. ii, pi. xvii, 



fig. 4). 



