ANCODON GOEEINGEI. 183 



C. 9233. Anterior dorsal vertebra, wanting the epiphysis. In this the centrum is slightly opistho- 

 coelous ; the neural spine is large, backwardly directed, and narrowing to a point ; 

 strong transverse processes directed upwards and outwards ; posterior zygapophj'ses 

 flat and looking nenrly directly downwards. Large concave surfaces for the heads of 

 ribs at upper angles of posterior face of centrum. Width of centrum 7"5 cm. (app.) ; 

 height of ditto 6"5 cm. ; height to top of neural spine 14 + cm. ; width between ends 

 of transverse processes 14"6 cm. 



M. 8867. Posterior dorsal vertebra of a smaller animal. Centrum wanting epiphyses ; deeper than 

 wide and v^ith a strong hypapophysial ridge: shallow facet for rib-head about the 

 middle of the pedicle of the neural arch ; neural spine sloping strongly backwards. 

 Width of centrum 5 cm.; height of ditto 4'5 cm.; height to top of neural spine 13+ cm. 



Presented by the Egyptian Government, 1904. 



C. 7884. Nearly complete lumbar vertebra, wanting posterior epiphysis. The centrum is a little 

 higher than wide, at least posteriorly ; it has a strong hypapophysial ridge, and its 

 neural surface is strongly concave from side to side. The neural arch is high and the 

 neural spine is a broad thin plate of bone abruptly truncated at its upper end and 

 sloping very little backwards. The posterior zygapophyses are large and overhang the 

 hinder border of the centrum ; the anterior zygapophysial surfaces are slightly concave 

 from side to side ; the transverse process is broken away. 



M. 8867a. Imperfect lumbar vertebra, similar to last, but of a larger individual. 



Presented by the Egyptian Government, 1904. 



C. 8637. Glenoid end of right scapula. The glenoid cavity is nearly circular in outline, and 

 separated from it by a notch is the strongly recurved coracoid process, which does not 

 quite reach the level of its margin. The glenoid border in the region of the neck is 

 flattened and bears a small but well-defined pit. This bone differs from that of 

 Diplopus in the relatively smaller size of the much more recurved coracoid process, 

 in the absence of a deep fossa on the glenoid border of the neck, and in the more 

 nearly circular outline of the glenoid cavity itself. Fragments of scapulae from 

 Hamstead Cliff, referred to Ancodon, differ in having no distinct coracoid notch, a 

 larger coracoid process, and a more oval glenoid cavity. 



Antero-posterior diameter of glenoid cavity 4-8 cm. 



Total width with coracoid process 6-5 „ 



Width of neck 4-1 „ 



M. 8510. Glenoid end of right scapula, similar to last specimen. 



Presented by W. E. de Winton, Esq., 1903. 



C. 8655. Distal end of left humerus. This resembles very nearly the distal ends of some humeri 

 from Hamstead, presumably belonging to Ancodon. The inner portion of the trochlea 

 is larger than in Diplopus, and is not produced down into a thin flange-like edge. The 

 inter trochlear ridge is much narrower and sharper than in that genus. There is a 

 small supratrochlear perforation. The inner condyle forms a large blunt prominence 

 on its inner side and is produced backwards into a posterior projection, the distal border 

 of which is at right angles to the posterior border. The shaft was comparatively 

 slender. The dimensions (in centimetres) of this specimen are : — Width of shaft 3 ; 

 greatest width of distal end b"2 ; width of distal articulation 3'8. 



