PEOZEUGLODON ATEOX. 257 



Width of supraoccipital surface 13'2 



Height of supraoccipital surface above foramen 11'7 



Width of skull at zygomatic process .... .... 34 app. 



„ between outer ends of exoccipitals 22 



„ of foramen magnum 6 app. 



„ between ends of supraorbital processes 13 



„ at temporal fossae 4'5 



Length of alveolar border of premaxilla ll'o 



The dimensions (in centimetres) of tlie teeth (or their alveoli) are : — 



Length. Width. 



i. 1 (alveolus only) 2-5 1"8 



i.2 „ 2-7 1-7 



i.3 „ .... .... 2-4 1-6 



c. „ 3-1 2-4 



pm.l „ .3-5 2-2 



pm. 2 . . . . 5'2 1-8 (anterior root). 



j>m. 3 4'5 3"1 



pm.4: 4-3 2-5 



Presented hy the Egyptian Government, 1905. 



C. 9389, C. 9230, C. 9332. Atlas, axis, and (?) third cervical vertebrae, presumably associated and 

 perhaps belonging to the same animal as the portions of a skull just noticed. Described 

 and figured above (text-fig. 83). These vertebrae are in a nearly perfect stati^ of 

 preservation. The epiphyses are not fused with the centrum, though still in srfv. The 

 dimensions (in centimetres) of these vertebrae are given below : — 



Atlas (text-figs. 83 A, 83 D) : 



G-reatest width at surface for condyles 11'2 



„ „ ,. axis 10-6 



,, „ transverse processes 15'7 



„ height 10 



Width of neural canal .... 4-9 



Axis (text-figs. 83 B, 83 D) : 



Length of centrum including odontoid process 6'5 



Height to top of neural spine 12 



Width of posterior face of centrum 5-2 app. 



„ at transverse process 11*2 



„ of neural canal 3*2 



Height of neural canal 3 



Third cervical (text-figs. 83 C, 83 D) : 



Width of centrum 4-8 



Height of centrum 4-2 



Thickness of centrum (in middle) 1'5 



„ „ (lower border) 1-8 



Height to top of neural spine 9"6 



Width at transverse processes 10'5 



Height of neural arch 3'2 



Width of neural arch 3 



2l 



