86 — 



Radiolites ingens (D'Orb.), SphœruUtes ingens (Des- 

 moulins), Roy an. 



Radiolites acuticostatus (D'Orb,), Royau. 



LAMELLIBRANCHES. 



ORDRE DES PLEUROCONQUES. 



Ostrea frons (Park.), Ostrea harpa (Goldf.), Saintes 

 Koyan, Pérignac. 



Ostrea hippopodium (Nilsson), Saintes. 



— laciniana (D'Orb.), Saintes. 



— larva (Lamarck , D'Orb.) , Ostrea tegiUacea 

 (Forbes), Ostrea ponticerianus (D'Orb.), Ostrea falcata 

 (Morton), Ostrea nasuta (Morton), Ostrea 7nesenierica 

 (Morton), Meschers, Royan. 



Ostrea matheroniana ( D'Oi^b. ) , Exogyra texasana 

 (Rœmer) , Ostrea spinosa (Rœmer) , Exogyra spinosa 

 (Matheron), Saintes, Royan. 



Ostrea wegmaniana (D'Orb.), Royan. 



— proboscidea (D'Arch.), Saintes. 



— santonensis (D'Orb.), Ostrea diluviana (Go! di.) 

 Ostrea pes'leonis (Forbes), Saintes. 



Ostrea vesicularis (Lamk.), Gryphœa expansa (Sow.)' 

 Gryphœa élongata (Sow.), Gryphœa ancella (Rœmer), 



