J. Chédeville. — Guide géologique au Fayel (Oise). 241 



Volvaria Lamk. 



*acutiuscula, Sony. 

 Volutilithes Swainson. 

 :— Voluta Linné. 



scabriculus, Sol. 



depauperatus, Sov. 



*labrellus, Lamk. 



strombiformis, Desh. 



cithara, Lamk. 



= ventricosa, Def. 



mutatus, Desh. 

 Volutolyria Crosso. 

 = "Voluta Linné. 



musicalis, Lamk. 

 Lyria Gray. 

 ■=. Voluta Linné. 



Branderi, Desh. 

 Marginella Lamk. 



*crassula, Desh. 



Edwardsi, Desh. 



cylindracea, Desh. 



dentifera, Lamk. 



— arctata, Desh. 



pusilla, Ed. 

 Harpa Rhumph. 



elegans. Desh. 

 Olivella Swainson. 

 = Oliva Bruh. 



Branderi, Sow. 



micans, Desh. 



Laumonti, Lamk. 



Marmini, Mich. 

 AnciJla Lamk. 

 — Ancillaria Lamk. 



buccinoides, Lamk. 



obesula, Desh. 



*dabia, Desh. 



canalifera, Lamk. 

 Cancellaria Lamk. 



costulata, Lamk. 



diadema Wab. 



*delecta, Desh. 



multiensis, Moriet. 



Danieli, Moriet. 



Bezanconi, de Haine. 



nana, Desh. 



evulsa, Sol. 



angulifera, Desh. 

 Conorbis Swaison. 



marginata Lamk. 

 Pleurotoma Lamk. 

 Conus Linné. 



crenulatus, Desh. 



stromboides Lamk. 



costiger, Gossm. 



Gisors. 



Cryptoconus von Kœnen. 



— Pleurotoma Lamk. 

 priscus, Sol. 



— . clavicularis, Desh. 



glabratus, Lamk. 

 Borsonia Bell. 



cresnensis, de Raine. 

 Genotia H. et A. Adams. 

 ~ Pleurotoma Lamk. 



lyra, Desh, 

 Bathytoma Harr. et Burr. 

 = Pleurotoma Lamk. 



turbida, Sol. 



ventricosa, Lamk. 

 Asthenotoma Harr. et Burr 



zonulata, Edw. 



dissimilis, Edw. 



fayellensis, Boury. 



crassilirata, Boury. 

 Pleurotoma Lamk. 



plebeia, Sow. 



ambigua, Boury. 



curvicostata, Lamk. 



Francisci de Raine. 



propinqua, Desh. 



obliterata, Desh. 



lepta, Edw. 

 Surcula H. et A. Adams. 



— Pleurotoma Lamk. 

 *Michelini, Desh. 



= dentata, Lamk. 

 *textiliosa, Desh. 

 Drillia Gray. 



— Pleurotoma Lamk. 

 brevicula, Desh. 

 *turella, Lamk. 



:=3 acutangularis, Desh. 



*castaria, Desh. 



simplex, Desh. 

 Raphitoma Bell. 



==: Pleurotoma, Lamk. 



Boutillieri, Cossm. 



columnella, Desh. 



clathrata, Desh. 



polycolpa, Cossm. 



goniocolpa, Cossm. 

 Amblyacrum Cossm. 



Chevallieri, Cossm. 

 Peratotoma Harr. et Bron. 

 = Pleurotoma Lamk. 



striarella, Lamk. 

 Mangilia Risso. 



parisiensis. Cossm. 



labratala, Cossm. 

 Terebra Adanson. 



plicatula, Lamk. 

 Actseon Montfort. 



— Tornatella Lamk. 

 Deshayesi, D. R. et M. Ch. 

 striatinus, Desh, 



*alter, Desh. 



Chevallieri, Desh. 

 Tornatina A. Adams. 

 — Bullina Desh. 



grignonensis, Desh. 

 Scaphander Montf. 

 = Bulla Brug. 



Brongniarti, Desh. 

 Philine ascanius. 

 . — Bullœa Lamk. 



*expansa, Sow. 

 Bullinella Newton. 

 = Bulla Brug. 



Bruguieri, Desh. 



cylindroides, Desh. 



ambigena, Desh. 



denudata, Desh. 



*conulus, Desh. 

 Roxania 



Bulla Brug. 



ovulata, Lamk. 



*semistriata, Desh. 

 Ringicula Desh. 



ringens, Lamk. 



Bezançoni, Moriet. 

 Siphonaria Sow. 



*spectabilis, Desh. 



costaria, Desh. 



*crassicostata, Desh. 

 Limnsea Lamk. 



*acuminata, Brong. 



arenularia, Brord. 

 Planorbis Guettard. 



goniobasis, Sandb. 



— rotundatus, Bronl. 

 obtusus, Sow. 



— ambigua, Desh. 

 Auricula Lamk. 



ovata, Lamk. 



nobilis, Desh. 

 Glandina Schum. 

 =2 Achatina Lamk. 



*Cordieri, Desh. 

 Ariophanta Desm. 



occlusa, Edw. 

 Hélix Linné. 



Chevallieri, Cossm. 

 Belosepia Woltz. 



*Blainvillei, Desh. 



J. Chédeville. 



