LIAS FORMATION. 



Sanguinolaria clegans 

 Pholadomya obliquata 

 Amphidesma. 1 . donaciforme 



... PL XII. fig. 9. 

 ... PL XIII. fig. 15. 

 ... PL XII. fig. 5. 



2. rotundatum ... PL XII. fig. 6. 



Unio. 1. concinnus (Min. Conch, tab. ccxxiii.) 



2. crassiusculus (Min. Conch, tab. clxxxv.) 



3. Listeri (Min. Conch, tab. cliv.) 



4. abductus 



Pullastra ... 



Venus, as in calcareous grit ? 



Crassina minima 



Corbis? 



PL XI. fig. 42. 



PL XIII. fig. 16. 

 PL IV. fig. 26 ? 

 PL IX. fig. 23. 

 PL XII. fig. 3. 



Trigonia literata (Young and Bird) ... PL XIV. fig. 11. 



Cerbula ? cardioideum 



PL XIV. fig. 12. 



Cardium. 1. truncatum (Min. Conch.) PL XIII. fig. 14. 



2. multicostatum (Bean MS.) PL XIII. fig. 21. 



3. cast of inside PL XII. fig. 7. 

 Hippopodium ponderosum ( Min. Conch, tab. ccl.) 



Modiola. 1- scalprum (M. C. t. ccxlviii.) PL XIV. fig. 2. 



2. Hillana (Min. Conch, tab. ccxii.) 

 Pinna folium (Young and Bird, PI. X. fig. 6.) PL XIV. fig. 17. 



Nucula. 1. ovum (Min. Conch.) 

 2. complanata (cast) 



Cucullaea, a smooth species 



PL XII. fig. 4. 

 fig. 8. 



Crenatula ventricosa (Min. Conch, tab. ccccxliii.) 



Inoceramus dubius, var. longitudinally ) , -y jj ~ , . 

 striated (Min. Conch.) -> 



161 



In calcareous nodules (rare.) 

 In marlstone, Bildsdale, 



Rosebury, Sic. 

 Upper shale, hard shale, &c. 

 Upper shale, and marlstone. 



Ditto. 



Near Pocklington. 

 Whitby, upper shale. 

 In marlstone. 



Ditto. 

 Ditto. 



In calcareous nodules. 

 Upper shale, Whitby. 

 Lower shale, Robin Hood's 



Bay ; also in the upper 



shale (Mr. Williamson.) 

 Lower shale, Robin Hood's 



Bay. 



Marlstone universally. 

 In calcareous nodules, and 



marlstone. 

 Upper shale. 



Lower shale, Robin Hood's 



Bay. 

 Marlstone, Robin Hood's 



Bay, Eston Nab ; also in 



the I. ofPabba. 

 Robin Hood's Bay. 



Lower shale, Robin Hood's 



Bay, Boulby Cliffs. 

 Upper shale, Whitby. 

 Ditto. 



(Author's cabinet.) From 

 the calcareous nodules. 



Hard shale, and Hawsker, 

 (Young and Bird.) 



Upper shale, Whitby. 



