164 



ORGANIC REMAINS. 



Ammonites. 22. lenticularis ... PI. VI. fig. 25. 



23. crenularis ... PL XII. fig. 22. 



24. Clevelandicus (Young and Bird) 



25. Turner! (M. C. t. cccclii.)Pl.XIV.fig.l4. 



26. geometricus 



27. vittatus (Young & Bird) PI. XIII. fig. 1. 



28. sigmifer ... PI. XIII. fig. 4. 



29. Hawskerensis (Y. & B.) PI. XIII. fig. 8. 



30. Conybeari (Min. Conch.) PI. XIII. fig. 5. 



31 . Bucklandi (Min. Conch.) PI. XIV. fig. 13. 



32. obtUSUS (Min. Conch, tab. clxvii.) ) 

 Redcarensis ? (Young and Bird) J 



33. Walcottii (Min. Conch, tab. cvi.) 



34. striatulus (Min. Conch, tab. ccccxxi.) 



35. ovatus (Young 85 Bird) PI. XIII. fig. 10. 



36. * nitescens (Young and Bird) 

 37- * obliquatus (Young and Bird) 



38. Mulgravius (Young and Bird) 



39. exaratus (Young & Bird) PI. XIII. fig. 7 



40. Lythensis (Y. & B.) PI. XIII. fig. 6. 



41. * Boulbiensis (Young and Bird) 



42. * impendens (Young and Bird) 



43. concavus ? (Min. Conch, tab, xciv.) 



44. elegans ? (Min. Conch.) PI. XIII. fig. 12 



CRUSTACEA AND ANNULOSA. 



In ironstone. 

 In upper shale. 

 Staithes, &c. 

 Lower shale, Robin Hood's 



Bay. 



(Mr. Ripley's collection.) 

 In calcareous nodules. 



Ditto. 

 Hard shale and calcareous 



nodules, Hawsker. 

 Nodules and hard shale. 

 Lower shale, Robin Hood's 



Bay, and Redcar. 



Ditto. 



Upper shale. 



Ditto, and Peak. 



" Hard bands, Hawsker." 



" Lias bands." 

 Ditto. 



Upper shale, Lyth, Salt- 

 wick, &c. 



Boulby, &c. 



Upper shale, Boulby, &c. 

 Ditto. 

 Ditto. 



Upper shale. 

 Ditto. 



Two species of astacus ? have been found by Mr. Williamson, in the upper part 

 of the lias shale ; one of them strongly resembles that of the Oxford clay ; the other 

 is similar to astacus rostratus, PI. IV. fig. 20. 



Serpula capitata 

 Dentalia giganteum 



PL XIV. fig. 6. Lower shale, Robin Hood's 

 Bay. 



fig. 8. Marlstone, common. 



* These ammonites unknown to me, are not figured by the authors who have named them. 



