PLANCHE I 



1-3. Planorbis (Segmentùni) Bureaui Cussm. 4/1 3 



4-6. Planorbis (Anisus) coiSLiNENSis Cossm. 4/-! 3 



7-8. Bayanoteuthis armoricensis Cossm. g. n. 2 



9-10. AURICULA (Pythiopsis) Vasseuri Cossm. g. n. 4 



11. Pleurotoma {Eopleuruturna) undata Lamk. 



12-13. ROXANIA Ballui Cosm. 



14-15. \c-fJEOti OcTAVii Vasseur. 



16-17. Pleurotoma (Eopleurotoma) DALiMfERi Cussm. 



18. C^XUM (Watsoiiia) i.iTUUS Desh. 



19-20. Pleurotoma (Eopleurotoma) rudiuscula Hesti. 



21-22. Drillia (Tripla) Cureti Cossm. 



23-24. Dru lia (Cymatosijrinx) Ammoni Cossm. 



25-26. Drillia (Tripia) Uumasi Cossm. 



27. Drii,l[a (2'ripta) granulata [Lamk.]. 



28-29. Pleurotomella orthocolpa Cossm. 



30-31. Raphito.ma namnetensis [Cossm.]. 



32-33.* Raphitoma perplexa [Desh.]. 



34-35. Bathytoma {EpuUri:^ iu.athratula Cossm. 



36-37. Bêla gibbosa Cussm. 



38-39 et 48. Borsonia {Cvrdieria) Bureaui Cossm. 



40-41. Mangilia CAPiLLACEA [Desh.]. 



42-43. Hemiconus rhytidophorus Cossm. 



44-45. Marginella (Stazzania) Chantegraini Cossm. 



46-47. Pleurotomella goniocolpa [Cossm.]. 



W. Fusus porrectus Solander. 



50. Fusus sp. 



51 et 66. Mitra mixta Lamk. 



52. Scaphella sp. 



53. Clavii.ithes iCos}>iolitfies) pupoides Cossm. 



54. Streptochetus brachyspira Cossm. 



55-56. CLAVILITHESl/l7i(J/ja/lteS)DIPTYCH0PH0HUsC(iSs 



57. RoxANiA Ballui Cossm. 



58-59. Streptochetus cf. intortus [Lamk.]. 



60-61. Lathyrus (Lathyrulus) Bourdoti Cossid. 



H2-63. Streptochetus Pallaryi Cossm. 



64-65. SiPHONALiA DuMASi Cossm. 



67-69. Cryptospira (Gibberula) Almxi Cossm 



70-71. Lirofusus inopinatus Cossm. 



72. Syrnola angusta [Desh.]. 



73-74. STREPTOLATHYRUS SUBAN<iULATINUS Cossiri. 



