PLANCHE I 



1-2. 



LlTTORINOPSIS ARMORICENSIS [Vasseur]. 



3/1 



O/l 



60 



3-4. 



LlTTORINOPSIS (StlfloploCUS) HOUDASI GOSSIÏI. 



3/1 



«»/. j. 



60 



5-6. 



Stenothyra mumiola Cossm. 



10/1 



62 



7-8. 



TURR1TELLA Sp. 



10/1 



59 



9-10. 



ClRSOTREMA (C07^0Yl\SCO,l(X) BOURDOTI d6 Boury 



3/1 



O/l 



63 



11-12. 



Cirsotrema (Goroniscala) Houdasi Cossm. 



3/1 



63 



13. 



Rissoina (ZebincC) fallax Desh. 



5/1 



62 



14-15. 





3/1 



û/1 



56 



16. 



Acirsa {Acivsellci) Bouryi Cossm. 



5/1 



64 



17. 



Triphora (Ogiviu) pentat.^ïniata Cossm. 



3/1 



O/l 



58 



18-19. 



Mangilia labratula Cossm. 



3/1 



O/l 



55 



20-21 . 



Crania cf. EOC/ENiCA de Raine. 



1 /1 



73 



22. 



Plkurotoma (EoplcuvototncL) undata Lamk. 



1 li 



55 



23. 



Anaghis (TwwîcoloY}iliiis) Houdasi Cossm. 



5/1 



O/l 



57 



24. 



Atilia vel Terebra. 



5/1 



O/ A 



57 



25-26. 



^TPHfiMAT ta ( ( ? fiïitns* h pt u qï triivcata rRanHnnl 



3/1 



Oj 1 



56 



27. 



CpTCCI TRTJ'T T A T> A R T CI PIS* CTC PlpcVl 



5/1 



O/l 



68 



28. 



Ptqtttt t a ^ïïuiro^TATA rFîaiiHnnl 



5/1 



O/l 



75 



29. 



Cistella C.ollardi [Baudon]. 



5/1 



75 



30. 



Bayania delibata [Desh]. 



3/1 



59 



31. 



Odontostomia hordeola [Lamk.]. 



3/1 



66 



32-33. 



Ringicula gouetensis Cossm. 



5/1 



54 



34-35. 



ClNGULA? EOC^ENICA Cossm. 



5/1 



60 



36-37. 



Chevallieria minuta [Desh.]. 



3/1 



62 



38. 



TURBELLA GIBBOSULA Cossm. 



5/1 



61 



39. 



NORRISELLA PERIAULACINA Cossm. 



3/1 



67 



40-41. 



ClSTELLA CRASSICOSTATA [Baudon]. 



3/4 



74 



42. 



Cistella Baudoni [Desh.]. 



5/1 



76 



43. 



ClRCE (Gouldia) CRASSATELL^EFORMIS Cossm. 



1/1 



37 



44-45. 



Cistella armoricensis de Morgan em. 



3/1 



74 



46. 



Marcia (Textivenus) subtexta [Dufour]. 



1/1 



43 



47. 



Phacoides {Parvilucma) Peneaui Cossm. 



2/1 



28 



48. 



Kellya (Dïvarikellyà) Allixi Cossm. 



3/1 



22 



49. 



Cirge (Gouldia) quadratula Cossm. 



3/2 



37 



50. 



Fabagella dilatata Cossm. 



1/1 



52 



51. 



Pteromeris Houdasi Cossm. 



5/1 



18 



52. 



Aviculoperna cf. arthonensis Cossm. 



5/1 



5 



