ANCODON GOKRINGEr. 
183 
C. 9233. Anterior dorsal vertebra, wantiii/*; tlie epiphysis. In this the centrum is sliglitly opistlio- 
cadons ; the neural spine is lar^e, hackwardly directed, and narrowing to a point ; 
strong transverse processes directed upwards and outwards ; posterior zygapo[)hyses 
Hat and looking nearly directly downwards. Large concave surfaces for the heads of 
ribs at upper angles of [)Osterior face of centrum. Width of centrum 7'5 cm. (a[)p.) ; 
height of ditto G‘5 cm. ; height to top of neural spine 14 -f cm. ; width between ends 
of transverse processes 14‘G cm. 
M. 8867. Posterior dorsal vertebra of a smaller animal. CJentrinn 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 sfiine sloping strongly backwards. 
Width of centrum 5 cm.; height of ditto 4'5 cm.; height to top of neural spine 13 -f cm. 
Presented by the Eyyjjtian Government, 1904. 
C. 7884. Nearlv complete lumbar vertebra, wanting posterior epiphysis. The centrum is a little 
higher than wide, at least posteriorly ; it has a strong hy|)apophysial 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 jirocess is broken away. 
M. 8867 a. 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, ami 
sej)arated from it by a notch is the strongly recurved coracoid process, which does not 
(piite 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 scapulaj 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 vvidtli 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, Esg., 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 2:)ortion of the trochlea 
is larger than in Diplopus, and is not produced down into a thin Hange-like edge. The 
intertrochlear 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 })rojection, 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 5'2 ; width of distal articulation 3‘8. 
