THE FOREST-BED OF EAST ANGLIA. 105 
III. Arras. (Nearly complete, but wanting the end of the left transverse process. The 
second series gives the measurements of the articulated specimen of C. giganteus 
(Irish) in the Woodwardian Museum at Cambridge.) 
C. be’grandi CO. giganteus (Wood- 
(Pakefield). wardian Museum), 
inches. millim., | inches. millim. 
Centrum, greatest length of .. 0.1... seeeeee rece ete e eens 25 G+ 27 68 
Neural arch, length in median dorsal line.....-.--+.+++++000- 25 64 30 it 
Greatest pee of vertebra (estimated at twice the width of oy 73 185 8-7 291 
perfect Side) 2... se ee cece er tte ete tee e eraser ee tees 
Width between outer edges of facets for condyles of skull ...... 4-0 102 45 115 
Width between outer edges of facets for odontoid process ...... 40 102 45 115 
Front oe of facet for condyle to middle of lateral part of facet ey 4-0 102 45 15 
odontoid process .... 1.22.2. 0002 ee scene eee cree tec eenece 
Tip of ee spine to a point vertically below it on the aa 3-0 76 3-6 93 
surface of the centrum .......,.0seeeee ee tee cece ene eees 
Tip of hypapophysis vertically to the level of the hinder edge of \ 3-0 76 29 74 
the neural arch in the middle line .............+-+e++0ee-e 
Deepest point in the depression behind the ventral nerve-foramen F 
} 16 41 | 1: 46 
to the dorsal edge of the facet for the odontoid process........ 
Width of centrum between the two depressions ........--.-.- 19-21 47-53 2-8 7&2) 
Width of neural canal, in front ........ 0-00 e eee eee e ee nres ilog/ 44 
35 5 i Plinth Sar enombars Sosnodvenpdotian ave isi 44 
Vertical height of neural canal, in front ..........++see+ees 12 31 
a 5 a op IgGl Soon ope on od oc orOnoE ier 44 
IV. Axis. (Practically complete.) 
C.belgrandi —_|\C. giganteus( Wood- 
(Pakefield), wardian Museum), 
inches, millim. | inches. millim. 
Centrum, greatest length (without odontoid process) .........- 4-4 112 5-1 129 
A 55 » (with * Pile) Macro Oras Bins 137 
Neural arch, length at the top of the neural canal...........--- 40 102 47 120 
a Spine, length of . 5. oie ceisler seca eclnccseers 5:0 127 Bas) 140 
Wacet for atlas, width, Of <2. <tc je © vroicie' ein Abpea sia ctele oe (ule) ornlie sini 39 100 4-4 112 
Odontoid process, width at tip ........6. see ee ects esse eee 16 40 
Top of neural canal to bottom of facet for atlas ............-- 2-9 74 32 82 
Length of facet for anterior zygapophysis of 3rd vertebra ...-.- 16 40 19 45 
Greatest vertical height (at hind end) ..........6+-eeeeeeees 54 137 62 157 
5 width (uearhind end) .....20.ce2-sessec ese cere 40 102 63 173 
Posterior zygapophyses, width across.........--.eeseseeeeeee 30 76 4:0 102 
Posterior end of centrum, vertical height of articulating surface .. 19 48 
Top of neural spine to top of neural arch .... «0 sss. seev ease 2-4 61 3:6 92 
VoL. XV.—Part Iv. No. 3.—December, 1899. Q 
