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



lœvigata, Lamk. 

 Cardita Brug. 



*planicosta, Lamk. 



z=z mitis, Lamk. 



complanata, Desh. 



Davidsoni, Desb. 



•=. divergens, Desb. 



sulcata, Sol. 



pulchra, Desb. 



aspera, Lamk. 

 Woodia Desb. 



crenulata, Desh. 

 Nucula Lamk. 



bisulcata, Sow. 



Cossmanni, E. Vincent. 



= lunulata, Nyst. 

 Nuculana Linck. 

 = Leda Schum. 



galeottiana, Nyst. 

 Trinacria Mayer. 

 = Trigonocaelia Desb. 



cancellata, Desb. 



média, Desh. 



crassa, Desh. 

 Limopsis Sassi. 



nana, Lamk. 

 Axinaea Poli. 

 = Pectunculus Lamk. 



*pulvinata, Lamk. 



subangulata, Desh. 



— médius, Desh. 

 depressa, Desh. 



Arca Linné, 

 biangula, Lamk. 

 lamellosa, Desh. 

 Lyelli, Desh. 

 z= contorta, Desh. 

 scabrosa, Nyst. 

 == rudis, Desh. 

 appendiculata, Sow. 



— planieosta, Desh. 

 = condita, Desb. 

 amygdaloïdes, Desh. 

 asperula, Desh. 

 cylindracca, Desh. 

 Bernayi, Desh. 

 distans, Desh. 

 Edwardsi, Desh. 

 spatulata, Desh. 

 magellanoïdes, Desh. 

 Rigaulti, Desb. 

 margaritula, Desh. 



Mytilus Linné. 



acutangulus, Desb. 



Rigaulti, Desh. 

 Modiola Lamk. 



ambigua, Desh. 

 Lithodomus Cuvier. 

 z=z Modiola Lamk. 



argentinus, Desh. 



*cordatus, Lamk. 



papyraceus, Desb. 

 Modiolaria Bock. 

 === Modiola Lamk. 



seminuda, Desh. 



arcœformis, Cossm. 



Piethei, Desh. 



arenularia de R. et M. Ch. 

 Arcoperna Conrad. 



— Modiola Lamk. 

 capillaris, Desh. 

 Scarlesi, Chelot. 



Perna Brug. 



Lamarcki, Desb. 

 Aviculovulsa Cossm. 

 = Avicula Lamk. 



fayellensis, Cosm. 

 Vulsella Lamk. 



angusta, Desh. 



minima, Desh. 

 Anomalomya Cossm. 



corrugata, Cossm. 

 Radula Rhumph. 

 = Lima Brug. 



flabelloïdes, Desh. 



plicata, Lamk. 



tenuis, Desb. 

 Ghlamys Bolten. 



— Pecten Brug. 

 tripartita, Desh. 

 plebeia, Lamk. 



Plicatula Lamk. 



intuscrenata, Cossm. 

 Spondylus Linné. 



multistriatus, Desh. 

 Ostrea Lamk. 



cymbiola, Desb. 



cucullaris, Lamk. 



= lamellaris, Desb. 



Cossmanni, Dollf. 



= plicata, Def. 



extensa, Desb. 



cubitus, Desh. 

 Anomia Linné. 



psamatheis, Bayan. 



= pellucida, Desh. 

 Dentalium Aldrov. 



grande, Desh. 



parisien se, d'Orb. 



fissura, Lamk. 

 Siphonotalium M. Sars. 



— Gadus Raug. 

 parisiense, Desh. 

 bilabiatum, Desh. 



Chiton Linné. 



grignonensis, Lamk. 



Bernayi, Cossm. 



Bouryi, de Roch. 



Bezançoni, de Roch. 



Bourdoti, de Roch. 

 Patella Lister. 



Raincourti, Desh. 



centralis, Desh. 



glabra, Desh. 

 Acmœa Eschs. 

 = Patella Linné. 



Dutemplei, Desh. 

 Fissurella Brug. 



decisa, Desh. 



Chevallieri, Cossm. 



scobinellata, Cossm. 

 Emarginula Lamk. 



costata, Lamk. 



auversiensis, Desb. 



Subemarginula Blainv. 



— Emarginula Lamk. 

 fenestrata, Desh. 



Scutum Montf. 



= Parmophorus Blainv. 



concavum, Desh. 

 Scissurella d'Orb. 



Deshayesi, Mun. Chai. 

 Tinostoma H. et A. Adams. 

 = Teinostoma H. et A. 

 Adams. 



rotelliformis, Desh. 



= striatissimum, Desh. 



complanatum, Desh. 



dubium, Lamk. 

 Delphinula Lamk. 



lima, Lamk. 

 Liotia Gray. 

 r=r Delphinula Lamk. 



*Gervillei, Def. 



fimbriata, Desh. 

 Trochus Rondelet. 



margaritaceus, Desb. 



tiara, Def. 



ornatus, Lamk. 

 Glanculus Montf. 

 = Trochus Rondelet. 



Ozennei, Crosse. 

 Monodonta Lamk. 

 = Trochus Rondelet. 



parisiensis, Desh. 

 Solariella S. Wood. 



~ Turbo, Linné. 



tricincta, Desh. 

 Eumargarita Fisch. 

 •==. Solarium Lamk. 



spirata, Lamk. 

 Galliostoma Swainson. 

 = Trochus Linné. 



monoliferum, Lamk. 

 GQHonia Gray. 

 = Delphinula Lamk. 



turbinoïdes, Lamk. 

 Phasianella Lamk. 



Lamarcki, Desh. 



turbinoïdes, Lamk. 

 Neritopsis Gratel. 



parisiensis, Desh. 

 Nerita Adanson. 



pentastoma, Desh. 



mammaria, Lamk. 



auversiensis, Desh. 

 Neritina Lamk. 



Passyi Desh. 

 Tomostoma Desh 

 = Pileolus Sow. 



neritoïdes, Desh. 

 Syrnola Adams. 



— Pyramidella Lamk. 

 emarginata, Cossm. 

 misera, Desb. 



Odontostomia Geoffroy. 

 5= Odostomia Flemm. 



hordeola, Lamk. 



— pyramidellata. Desb. 



pyramis, Desb. 



mediana, Desh. 



