16 



BULL. SOC. se. NAT. OUEST. — 2^ SÉR., T III 



ÉNUMÉRATION DES ESPÈCES 



Bayania lactea Laiiik. sp 



— — var. uniangidata C. P. 



— suhslricUa Desli. sp 



Lacuna bifunis nov. sp 



Littorina tricoslalis Desh. sp 



— cf. annoricensis Vass 



— niueronata nov. sp 



Honialaxis bifrons Lamk. sp 



— niarginala Desh. sp 



— serrata Desh. sp 



— heliçoides nov. sp 



Pseudomalaœis eurychone Cossni 



Solaiium canaliculaluni Lamk 



— Lennieri nov. sp 



— Lebcscontei Vass 



— Goossensi Morlel 



— DonvUlel nov. sp 



— plesioniorphtini nov. sp 



— Dubnsi nov. sp 



Paryphostonia minus Desh. sp 



— tiirricula Brug. sp 



Rissoina clavula Desli. sp 



— cornigala nov. sp 



— çonstanlinensis nov. sp 



— plicalilis Desh 



— discreta Desh 



— seniistviata Lamk. sp 



— lœvigalissinia Desli 



— cf. polita Desh. sp 



— fallax Desli 



Pseiidotaphnis biiccinalis Lamk. sp.. . 

 Jiissoia nana Lamk. sp 



— DoUfusi nov. sp 



Systia polita Edw. sp 



— niicroaloma Desh. sp 



COTENTIN 



+ 



LUIRK-L\F' 



s!èl|e 



+ : + 



+ + 



+ 



+ + 



+ 1 • 

 + + + 



+ 



+ 



