PLATE XXIX. 



Fig. Paoe. 



1. Vrotelops anglicus, A. S. Woodward; portion of upper jaw witli cluster 



of teeth. — Zone of Holaster subglobosus ; Glynde, Sussex. Capron 

 Collection (B. M. no. 49900). 138. 



2. Ditto ; anterior end of left dentary bone, showing bases of teeth. — Zone 



of Holaster subglobosus ; Southeram, Lewes. Capron Collection 



(B. M. no. 49780). 138. 



3. Tomognathus mordax, Dixon ; upper view of skull. — Zone of JToJasler 



subglobosus ; Burham, Kent. Brodie Collection (B. M. no. P. 7646). 

 //•., frontals; .'"., a supraorbital bone. 140. 



4. Ditto ; imperfect skull and mandible, right side view, with lower tooth 



(f") enlarged three times. — Zone of Holaster subglobosus; 

 Southeram, Lewes. Capron Collection (B. M. no. 49702). cr., 

 supraoccipital crest ; d., dentary; mx., maxilla ; pm,i\, premaxilla. 140. 



5. Ditto ; imperfect skull and mandible, right side view. — English Chalk. 



B. M. no. P. 9237.' ag., angular; ecpt-., ecto pterygoid ; enpt., ento- 

 pterygoid; Jim., hyomandibular; mpt , metapterygoid ; qu., quadrate; 

 other letters as in fig. 4. 140. 



0. Ditto; skull with opercular apparatus, left side view. — Probably zone 

 of Holaster subglobosus ; Burham. Bowerbank Collection (B. M. 

 no. 39050). br., branchiostegal rays; op., operculum; pop., pre- 

 operculum ; sop., suboperculum ; other letters as in figs. 4, 5. 141. 



7. Ditto; imperfect skull and mandible, right side view. — English Chalk. 



B. M. no. P. 4841. Letters as in figs. 4, 5. 110. 



8. Ditto ; a supraorbital bone, twice nat. size, specimen shown in fig. 7. 1 10. 



9. Ditto ; left ectopterygoid, inner view, three halves nat. size. — Zone of 



Holaster subglobosus; Blue Bell Hill, Burham. S. J. Hawkins 

 Collection (B. M. no. P. 9043). 140. 



10. Ditto ; premaxilloe, front view, specimen shown in fig. 7. 140. 



11. Ditto; right maxilla, outer view, three halves nat. size. — Chalk; Kent. 



Enniskillen Collection (B. M. no. P. 3849). 140. 



12. Ditto; left clavicle (cl.) and base of pectoral fin. — Chalk; Kent. Egerton 



Collection (B. M. no. P. 1701). 114. 



13. Ditto; remains of head and trunk, right side view, two thirds nat. 



size. — Zone of Holaster subglobosus; Blue Bell Hill, Burham, Kent. 

 Collection of G. E. Dibley, Esq., F.G.S. a., anal fin-rays; c, caudal 

 lin-rays; plv., basal bone of pelvic fin ; other letters as in fig. 0. 141. 



Unless otherwise stated, figures are of the natural size. 



