Bull, Soc, Geol. de France. 



frb^^2^^G:Kj,Ci< 



S^SéneXVI.t.PL.XVIII. 



( S.CiX.uce. ;dw \^ yCLxxA 1888 ) 



m 



nh 



Bideault del.etlith- ImpEdouard Bry^Pans. 



1. Silesites Seranonis, d'Orb. sp 2. Pulchellia pulchella.d'Orl). sp. 



3. Holcodiscus Seunesi,KiliaTi. 



