EXPLICATION DE LA PLANCHE XIII 



Fig. 1-2. — Chondrodonta barremica Cossm. 

 3-5. — Pecten (Neithea) atavus Roejvier. 

 6-8. — Pecten (Neithea) Deshayesianus Math. 

 9-11. — Pecten (Neithea) planivalvis Cossm. 

 2-13. — Mytilus salevensis dé Loriol. 



Bvuj. Soc. oéol. he Fr. — (4), XVI, 1916, 



