LIAS FORMATION. 
133 
Unio. — 1. concinnus (Min. Conch, tub. ccxxiii.) 
2. crassiusculus (Min. Conch, tab. clxxxv.) 
3. Listeri (Min. Conch, tab. cliv.) 
4. abductus 
Pullastra prototypa 
Venus, as in calcareous grit ? 
Astarte minima 
Corbis uniformis... 
Trigonia literata (Voting and Bird) 
PI. XI. fig. 42. 
PI XIII. fig. 16. 
PI. IV. fig. 26. ? 
PI. IX. fig. 23. 
PI. XII. fig. 3. 
PI. XIV. fig. 11. 
Corbula ? cardioides 
fig. 12. 
Cardium. — 1. truncatum (Min. Conch.) PI. XIII. fig. 14. 
2. multicostatum (Bean, MS.) fig. 21. 
3. cast of inside ... PI. XII. fig. 7- 
Ilippopodium ponderosum (Min. Con. t. ccl.) 
Modiola. — 1. scalprum (M. C. t. ccxlviii.) PI. XIV. fig. 2. 
2. Hillana (Min. Conch, tab. ccxii.) 
Pinna folium (Young and Bird, PI. X. fig. 6.) fig. 17- 
Nucula. — 1. ovum (Min. Conch.) ... PI. XII. fig. 4. 
2. complanata (cast) ... fig. 8. 
Cuculkea, a smooth species 
Crenatula ventricosa (Min. Conch.) 
Inoceramus dubius var. longitudi- 1 fio- 14 
nally striated (Min. Con.t. ccccxliii.) i °' 
Plagiostoma. — 1. giganteum (Min. Conch, tab. Ixxvii.) 
2. pectenoideum (Min. Conch.) fig. 13. 
3 . Hermanni (Voltz) var. of ditto ? 1 
PI. XIV. fig. 18. ) 
Avicula. — 1. inasquivalvis (Min. Conch, tab. cclxiii.) fig. 4. 
Upper shale and marlstone. 
Near Pocklington. 
Whitby, upper shale. 
In marlstone. 
Ditto. 
Ditto. 
In calcareous nodules. 
Upper shale, Whitby. 
Lower shale, Robin Hood's 
Ray ; also in the upper 
shale (Mr. Williamson.) 
Lower shale, Robin Hood’s 
Ray. 
Marlstone universally. 
In calcareous nodules, and 
marlstone. 
Upper shale. 
Lower shale, Robin Hood’s 
Bay. 
Marlstone, Robin Hood’s 
Bay, Eston Nab. 
Robin Hood’s Bay. 
Lower shale, llobin Hood's 
Bay, Boulby Cliffs. 
Upper shale, Whitby. 
Ditto. 
(Author’s cabinet.) From 
the calcareous nodules. 
Hard shale, and Hawsker, 
( Y oung and Bird.) 
Upper shale, Whitby. 
In marlstone, Staithes, in 
lower shale, North Cliff, ? 
and Pocklington. 
In calcareous nodules. 
Marlstone and calcareous 
nodules. 
In marlstone universally. 
