AESINOITHEEIUM ZITTELI. 71 



C. 8060. Atlas vertebra associated with the type skull. In this specimen the lateral surfaces for 

 the axis are roughly triangular, their inner sides bounding the broad notch for the 

 odontoid being straight and nearly vertical. Condylar cups broad and deeply concave, 

 extending up to the level of the neural arch and down to the ventral bar. 



M. 8387. Atlas. Presented by the Egyptian Government, 1902. 



C. 8064, C. 8262, C. 8973, C. 9087. Four specimens of the atlas. 



C. 8077. Atlas with incomplete transverse processes. 



M. 8816. Atlas with right transverse process imperfect. Figured, with process restored, text-fig. 8. 



Presented hy the Egyptian Government, 1904. 

 M. 8460, M. 8494. Two specimens of the atlas. Presented by W. E. de Winton, Esq., 1903. 



M. 8816 a. Atlas of small individual. Lateral facets for axis more quadrate than usual. 



Presented by the Egyptian Government, 1904. 



The dimensions (in centimetres) of some of the above specimens are given in the following 



table : — 



C. 8060. M.8387. C.8262. C.8077. M.8816. C.9087. 



Width at transverse processes 31+ 43-6 47'4 .. 42 39-5 



„ condylar cups 23 24 app. 20-2 19 21-5 23-7 



surfaces for axis 18-7 19 17 16 16-5 18-3 



Extreme height 15-8 18 15-7 12-6 16-7 15-8 



Antero-posterior width of transverse processes . 5'8 8 8'5 5-2 7'3 7'7 



Length of neural arch 6-5 8-4 7-7 5 6-1 8-3 



C. 7888. Large and nearly perfect axis. The odontoid is very short and stout. Transverse process 

 perforated by large vertebrarterial canal ; paired hypapophysial tuberosities on postero- 

 ventral border of centrum. 



M. 8815. Axis, large specimen with broken transverse process. 



Presented by the Egyptian Government, 1904.. 

 M. 8388. Axis, rather smaller than last. Presented by the Egyptian Government, 1902. 



M. 8839. Axis of small individual. Presented by the Egyptian Government, 1904. 



M. 8411. Axis wanting transverse processes. Figured in text-fig. 9. 



Presejited hy W. E. de Winton, Esq., 1903. 

 C. 7810, C. 8086, C. 8990. Three specimens of the axis. 

 C. 8072. Axis, a small specimen with a relatively smaller and less massive odontoid process. 



The dimensions (in centimetres) of some of the above axes are given in the following table : — 



C.7888. C.7810. C.8086. M.8815. M.8388. M. 8411. 



Height to summit of arch 21-3 18-5 181 18 17-5 17-3 



Width of anterior end 20 app. 19-9 19-5 18 17 17-5 



„ of posterior end 14 14-5 13-1 13 13 13-5 



„ at transverse processes 32 . . 26 



Length (along ventral surface to tip of odontoid 



process) 15 14-8 14-1 15-5 14-8 13-7 



In addition to the atlas and axis numbered C. 8064 and C. 7888, the following series of vertebrse 



