. 1-2 



3-5 



6-7 



8-9 



10-12 



13-1 1 



15-16 



*17 



1S 



19 



20 



21 



22-23 



24-25 



26 



27-28 



29 



30-31 



32-33 



34-35 



EXPLICATION DE LA PLANCHE X 



Sulcoactseon ovoideus Cossm. 

 Ringinella cf. Chateleti Cossm. 

 Tornatina (Retusa) Jaccardi Pict. et Camp. 

 Tornatina (Retusa) Peroni Cossm. 

 ltieria Campichia truncata Pict. et Camp. 

 Phaneroptyxis Favria) Pellati Cossm. ' 

 Nerinea Vogtiana de Mortillet. 

 Nerinella cf. Dupiniana [d'Orb.]. 

 Phaneroptyxis Arnaudi Math. 

 Nerinea (Diozoptyxis) Renauxiana d'Ord. 

 Anchura cf. varusensis [d'Orb.]. 

 Procerithium angustivolutum Cossm. 

 Nerinella fugax Cossm. 

 Chenopus (Cyphosolen) tuberosus Cossm. 

 Columbellina obsoleta Cossm. 

 Urgonella mumiola Cossm. 

 Nerinea (Diozoptyxis) Renauxiana d'Orb. 

 Exelissa fugax Cossm. 

 Metacerithium intermedium Cossm. 

 Proacirsa Provençal! Cossm. 



Ut:ll: Soc, c.éol. de Fr. — (4), XVI, 1916. 



