Lima maxima (D'Arch.), Rovan. 



— truncata (Goldf.), Royan. 



— simplex (D'Orb.), Royan. 



Inoceramus impressus (D'Orb.), Royan. 



— regularis (D'Orb. ) , Inoceramus cripsii 



(Goldf.), Royan, Pérignac, Meschers. 



Inoceramus goldfussianus (D'Orb.), Inoceramus cripm 

 (Goldf.), Royan, Pérignac. 



îiîoceramiis lamarckii (Rœmer), Royan, Pérignac. 



Perna royana (D'Orb.), Royan. 



ORDRE DES ORTHOCONQUES. 



Mytilus dufrenoyi (D'Orb.), Royan. 



— ■ divaricatus (D'Orb.), Saintes, Royan. 



Lithodoraus obtusus ( D'Orb. ) , Lithodomus cripsii 

 (Goldf.), Royan. 



Lithodomus intermedius (D'Orb.), Royan. 



Arca royana (D'Orb.), Royan. 



— santonensis (D'Orb.), Saintes. 



— cretacea (D'Orb.), Arca tumida (D'Orb.), Cucidlea 

 tnmida (D'Archiac), Royan. 



Arca archiaciana (D'Orb.), Saintes. 



