106 Mr. H. E. Strickland on the genus Cardinia. 



from the marlstone of Byiield in Northamptonshire which is 5^ 

 inches long by 3 inches broad. 



7. Cabdinia ovalis, Stutchb. (sp.) 

 Lucina lavis, Goldf. Petref. pi. 146. £.11. 



Pachyodon avails, Stutchb. in Ann. Nat. Hist. vol. viii. pi. 10. 

 f. 17, 18, 19. 



Cardinia unionides, Ag. Et. Crit. Moll. pi. 12". f. 7—9. 



Var. 1. 



C. cyprina, Ag. Et. Crit. Moll. pi. 12". f. 4 — 6. 



Formation : lower lias. 



Localities : Dunhamstead and Coltknap hill, Worcestershire ; Ash- 

 leworth and Frethern, Gloucestershire ; Watchet, Somersetshire ; 

 Blumenroth, Coburg. 



M. Goldfnss's specific name Icevis is prior to the other two ; but 

 as it is founded on an erroneous identification with the Corbis 

 IdEvis of Sowerby, which is a very different shell, I retain Mr. 

 Stutchbury's name ovalis. The two supposed species figm-ed by 

 M. Agassiz are both founded on specimens which I sent to that 

 learned naturalist myself, and I am therefore able to identify them 

 positively with the present species. In Worcestershire this fossil 

 abounds about 100 feet above the base of the lower lias. Single 

 valves are very rare. 



8. Cardinia sulcata, Ag. 



Cardinia sulcata, Ag. Et. Crit. Moll. pi. 12. f. 1—9. 



Formation : " Calcaire a Gryphites." 



Locality : Soleure. 



Judging from the figui'e and description, the above seems to be 

 a distinct species. 



9. Cardinia aptychus, Goldf. (sp.) 



Cytherea aptychus, Goldf. Petref. pi. 149. f. 7. 



Formation : lias. 



Locality : Amberg. 



I have seen and examined specimens of all the abo\ e species 

 except nos. 8 and 9. 



II. Species referable to this genus, but whose specific characters 

 require further investigation. 



1. Pachyodon ahductus, Stutchb. in Ann. Nat. Hist. vol. viii. pi. 9. 

 f. 9, 10. 



I think this is probably one of the numerous varieties of C. 

 Listeri. I agree \\'ith M. Agassiz that it is not the Unio abduct us 

 of Phillips. 



2. Cardinia oblonga, Ag. Et. Crit. Moll. pi. 12. f. 13—15. 

 From the lower oolite of Normandy. Described /rom a cast, 



