170 



Myariae. 



Corbuleae. 



Tellinaceae. 



Yeneridae. 



Cardiacew. 



TAi '. A'' 



.. 



.7 v* 



ORGANIC REMAINS. 



Lutraria, 1, Speeton clay ; 2, gibbosa, Bath oolite, 



Amphidesma, 1, recurvum,* coralline oolite, Kelloways rock, and 



lias ; 2, decurtatum,* 3, securiforme,* cornbrash and Bath oolite ; 



4, donaciforme,* upper lias. 

 Corbula, 1, punctum,* Speeton clay ; 2, curtansata,* coralline oolite 



and Kelloways rock ; 3, depressa,* Bath oolite ; 4, cardioides, 



lower lias. 

 Sanguinolaria, 1, undulata, calcareous grit, Oxford clay, and corn. 



brash ; 2, marlstone ; 3, elegans,* -upper lias. 

 Psammobia laevigata,* coralline and Bath oolite. 

 Tellina, 1, Speeton clay ; 2, ampliata,* coralline oolite. 

 Lucina, 1, sculpta,* Speeton clay ; 2, crassa, calcareous: grit ; 3, li- 



rata,* Kelloways rock ; 4, despecta,* Bath and inferior oolite. 

 Crassina, 1, aliena,* 2, ovata,* 3, extensa,* coralline oolite; 



4, laevis,* Speeton clay ; 5, elegans, coralline and inferior oolite ; 



6, minima,* Bath and inferior oolite and upper lias ; 1, cari- 

 nata,* calcareous grit, Oxford clay, and Kelloways rock ; 8, Kel- 

 loways rock ; 9 ? inferior oolite. 



Venus, 1, coralline oolite. 



Cytherea dolabra,* coralline and Bath oolite. 



Pullastra, 1, recondita,* Bath oolite; 2, oblita,* inferior oolite; 



3, lias. 

 Corbis, 1, laevis, coralline oolite and Kelloways rock ; 2, uniformis, 



upper lias ; 3, asqualis, Kelloways rock. 

 Cardium, 1, lobatum,* coralline oolite ; 2, dissimile, Kelloways 



rock ; 3, citrinoi'deum,* cornbrash ,- 4, cognatum,* 5, semigla- 



brum,* Bath oolite ; 6, acutangulum,* Bath and inferior oolite ,- 



7, truncatum, 8, multicostatum,* marlstone ; 9, striatulum, 10, 

 gibberulum, 11, incertum, inferior oolite. 



Isocardifl, 1, angulata,* Speeton clay and Bath oolite ; 2, rhomboi- 

 dalis,* 3, coralline oolite ; 4, tumida,* calcareous grit; 5, minima, 

 cornbrash; 6, nitida,* Bath oolite; 'J, concentrica, Bath and 

 inferior oolite. 



Cardita similis, coralline and Bath oolite. 



Pholadomya, 1, decussata, Speeton clay ; 2, Murchisoni, 3, ovalis, 

 cornbrash; 4, producta, 5, nana,* Bath oolite; 6, delto'idea, 

 7, simplex,* calcareous grit ; 8, obsoleta,* Kelloways rock and 

 Oxford clay ; 9, acuticostata, Brandsby slate ; 10, obliquata,* 

 Bath oolite and marlstone. 



