LIAS FORMATION. 



Turbo undulatus ... ... PI. XIII. fig. 18. 



Trochus anglicus (Min. Conch, tab. cxlii.) 



Natica, cast of inside 



PI. XIV. fig. 10. 



PL XII. fig. 11. 

 PI. XII. fig. 12. 



PI. XII. fig. 16. 



Actaeon 

 Rostellaria? 



Nautilus. 1. astacoides (Y. and B. 



lineatus? (Min. Conch. 



2. annularis ... fig. 18. 



Belemnites 1. tubularis (Young & Bird.) PL XII. fig. 20. 



2. compressus (Young and Bird) fig. 21. 



3. elongatus (Miller) 



Ammonites. 1. heterophyllus (Min. Conch.)Pl. XII I. fig. 2. 



2. subcarinatus (Young&Bird)Pl. XHI.'fig 3. 



3. Henleyi (Min. Conch, tab. clxxii.) ") 

 heptangularis (Young and Bird) J 



4. heterogeneus (Young&Bird)Pl. XII. fig. 19. 



5. crassus (Young and Bird) ) p] YTT /. , - 



f ii. -vn. ng. 10. 

 var. with tubercles J 



6. communis (Min. Conch, tab. cvii.) 

 7- angulatus (Min. Conch, tab. cvii.) 



8. annulatus (Min. Conch, tab. ccxxii.) 



9. fibulatus (Min. Conch, tab. ccccvii.) 



10. subarmatus ( Min. Conch, tab. ccccvii.) 



11. maculatus (Young & Bird) PL VIII. fig. 11. 



12. gagateus (Young and Bird) 



13. planicostatus (Min. Conch, tab. Ixxiii.) 



14. balteatus 



PL XII. fig. 17. 



15. arcigerens ... PL XIII. fig. 9. 



16. brevispina (Min. Conch, tab. dlvi.) 

 17- Jamesoni (Min. Conch, tab. dlv.) 



18. erugatus (Bean, MS.) PL XIII. fig. 18. 

 19- fimbriatus (Min. Conch, tab. clxSv.) 

 20. nitidus (Young and Bird) 

 2L anguliferus ... PL XIII. fig. 19. 



Y 2 



In marlstone. 



Lower shale, Leppington, 



and Robin Hood's Bay. 

 Lower shale, Robin Hood's 



Bay. 

 In calcareous nodules. 



Upper shale. 



Ditto. (Whitby Mus.) 

 Ditto, Saltwick, &c. 

 Ditto. 

 Ditto. 



Boulby, Whitby. 

 Upper shale. 



Whitby, Northhamptonsh. 

 and Dorsetshire. 



Upper shale. 



Ditto, generally. 



Ditto, rare. 



In calcareous nodules, near 



Kettleness. 

 Upper shale. 



Ditto. 



" Hard bands, Hawsker." 

 Ditto. 



Lower shale, Robin Hood's 



Bay. 

 Upper shale. (Whitby 



Museum.) 

 Upper shale. 

 Lower shale. 



Ditto, Robin Hood's Bay. 

 Rare. 



Upper shale. 



" Hard bands, Hawsker." 

 In marlstone bed. 



