PLATE VIII. 



All figures natural size, and from the Red Crag Nodule-bed, except 14, a, b, which 

 are half natural size, and from the Coralline Crag. 



1 . EucETus AMBLTODON, Du Bus. Tooth, longitudinal section 



showing outer layer of cementum and thick core 

 of dentine, with ^'lobular dentine in the middle. 

 Woodbridjre. M. P. G. 



2. EuCETus AMBLYODON, Du Bus. Transversa section of a 



tooth with very thick cementum. Woodbridge. 

 M. P. G. 



3. EuCETUS AMBLTODON, Du Bus. Left periotic, tympanic 



aspect, after Lydekker. Felixstow. No. 27,854, 

 Brit. Mus. 



4. Hyperoodon. Eight periotic, tympanic aspect. After 



Lydekker. Ipswich Mus. 



5. Okca citoniensis, Capellini. Eight periotic, tympanic 



aspect. Woodbridge. M. P. G. 



6. CiTONEZiPuros PLANiROSTRis, Cuvier. Left periotic, tym- 



panic aspect. Woodbridge. M. P. G. 



7. Mesoplodon longirostkis ? Cuvier. Left periotic, tym- 



panic aspect. Woodbridge. M. P. G. 



8. Globicephalus tjncidens, Lankester. Left periotic, tym- 



panic aspect. Woodbridge. M. P. G. 



9 Genus ? Eight periotic, tympanic aspect. Woodbridge. 



M. P. G. 



"^ Delphinoid periotics C^ „ ■,-,,.. t„t.^ 



I0,a,b. not generically I^^ft. Felixstow. M. P. G. 



11, a, 6. y determined; < Left. Woodbridge. M. P. G. 



12, a, 6. , «. iiiner face, 



Jo, tympanic aspect. 



Left. Boyton. M. P. G. 



13. Delphinoid right tympanic. Boyton. M. P. G. 



14, a, 6. TuRSiOPS tursio ? Bonnaterre. Middle caudal vertebra; 



a, end view, h, side view. Coralline Crag, Broom 

 Pit, Gedgrave. Presented by Mr. Clement Eeid to 

 M. P. G. 



15 Squalodon antwerpiensis, v. Beneden. Side tooth. 



Suffolk. Eeed Coll., York Mus. 



16. Squalodon antwerpiensis ? V. Beneden. Anterior tooth, 



two views. Eeed Coll., York Mus. 



