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EXPLANATION OF THE PLATES. 
PLATE XLIV. 
Lower views, of the natural size, of the skulls of : — 
Fig. A. Testudo elephantopus ^ . 
Fig. B. Testudo microphyes 2 . 
Fig. C. Testudo ephiiypium S . 
Fig. D. Testudo nigrita 6 . 
a, c, d, e as in Plates XLII. & XLIII. 
h. Hollow in front of the occipital condyle. 
f. Outer pterygoid-edge. 
PLATE XLV. 
Figs. A-C. Skull of Testudo microphyes S . Lower and side views and articular sur- 
face of mandible. 
Figs. D-F. Skull of Testudo abingdonii S ■ Lower and side views and articular sur- 
face of mandible. 
PLATE XLVL 
Fig. A. Upper and lateral views of the atlas of Testudo elephantopus. 
a. Centrum, 
Fig. B. Upper and lateral views of the atlas of Testudo vicina (centrum lost). 
Fig. C. Three views of the fifth cervical vertebra of Testudo elephantopus. 
Fig. D. Three views of the sixth cervical vertebra of Testudo elephantopus. 
All the figures are of the natural size. 
PLATE XLVII. 
Fig. A. Lateral view of the skull of Testudo vicina. 
Fig. B. Three views of the seventh cervical vertebra of Testudo elephantopus. 
a. Summit of neural crest. 
h. Hollow behind the anterior zygapophyses. 
Fig. C. Three views of the seventh cervical vertebra of Testudo vicina. 
a. Bifurcate summit of the neural crest. 
All these figures are of the natural size. 
PLATE XLVIII. 
Three views of the second (A), third (B), and fourth (C) cervical vertebrae of Testudo 
abingdonii, nat. size. 
PLATE XLIX. 
Three views of the fifth (D) and sixth (E) cervical vertebrse of Testudo abingdonii, nat. 
size. 
