PLATE II. 



G. 

 10. 



Fio. Faoe. 



1 . IIi/ho(liis hasanus, Egerton ; skull and inandible, top view, left side view 



(1 a), and lower view (1 b), one-half nat. size. — Weald Clay; Cooden 

 Beach, Pevensey Bay, Sussex, Beckles Collection (B. M. no. 

 P. 11870). «./., anterior fontanelle ; cJi., ceratohyal ; Jim., hyoman- 

 dibular; /. /. 1,2, anterior and posterior lower labial cartilages; ond., 

 mandible; orb., orbit; }).f., posterior fontanelle; pfq., pterygo- 

 quadrate (upper jaw) ; r., rostrum; ii. I. 1, 2, anterior and posterior 

 upper labial cartilages. 

 } r,d. Ditto; dermal tubercles in side view (1 c) and lower view (1 r/), ten 

 times nat. size.— Ibid. Beckles Collection (B. M. no. P. 11872). 



2. Ili/bodns ensis, sp. nov. ; tooth with broken apex, nat. size. — Middle 



Purbeck Beds; Swanage, Dorset. Museum of Practical Geology, 

 London, no. 27979. 



3. Ditto; crushed tooth, nat. size. — Ibid. M. P. G. no. 2797G. 



4. Ditto; tooth, nat. size. — Middle Purbeck Beds, Durlston Bay, Swanage. 



York Museum. 



5. Ditto; imperfect large tooth, abraded, nat. size. — Middle Purbeck Beds; 



Swanage. M. P. G. no. 27978. 



6. Ditto; tooth, twice nat. size. — Ibid. The type specimen. B. M. uo. 



21349. 



7. Ditto; postero-lateral tooth, three times nat. size. — Ibid. B. M. no. 



21349 b. 



8. Ifybodus parvidens, sp. nov. ; tooth, three times nat. size. — Wadhurst 



Clay ; Hastings. The type specimen. Teilhard & Pelletier Collec- 

 tion (B.M. no. P. 11877). 

 9-14. Ditto; six teeth, three times nat. size. — Ibid. Teilhard & Pelletier 



Collection (B. M. nos. P. 11878-83). 

 15, 16. Acrodus ornatus, A. S. AVoodward ; two principal teeth, five times nat. 

 size. — Wealden ; Brook, Isle of Wight. Sedgwick Museum, Cam- 

 bridge. 



17. Ditto ; anterior tooth, four times nat. size. — Ibid. Sedgwick Museum, 



Cambridge. 



18. Ditto; posterior tooth, five times nat. size. — Wealden; Bexhill, Sussex. 



B. M. no. P. 6105. 



I 



