EXPLICATION DES PLANCHES. 



PLANCHE XII. 



Fig. 1, a, b, c, d, e, f. Megalosaurus, Buck. 

 Fig. 2. Plesiosaurus, Conyb." 

 Fig. 3. [chthyodorulites, Buck. 



Fïg. k, a, b. Nautilus Schlumbergeri, Terq. 

 Fig. 5, a, b, c. Nautilus Malherbii, Terq. 



PLANCHE XIII. 



Fig. 1, a, b, c. Ammonites hettangiensis, Terq. 



Fig. 2, a, b. Ampullaria caiïnala, Terq. 



Fig. 3, a, b, c. Ampullaria obtusa, Desb. 



Fig. h, a, b. Ampullaria planulata, Terq. 



Fig. 5, a, b. Ampullaria angulata, Desh. 



Fig. 6. Ampullaria obliqua, Terq. 



Fig. 7, a, b. Ampullaria gracilis, Terq. 



PLANCHE XIV. 



Fig. 1, a, b, c, d. Chimaera Jolmsonii, Ag. 



Fig. 2, a,. 6, c. Littorina clalhrata, Desh. 



Fig. 3. Ampullaria planulata, Terq. 



Fig. U. Ampullaria angulata, Terq. 



Fig. 5, a, b. Turritella Dunkeri, Terq. 



Fig. 6, a, b, c, d, c. Turritella Zenkeni (Dkr. sp.), 



Terq. 

 Fig. 7, a, b. Turritella Deshayesi, Terq. 



Fig. 8, a, b, c. Melania cyclostoma, Terq. 



Fig. 9, a, b. Melania Tlieodori, Terq. 



Fig. 10, a, b. Melania unicingulata, Terq. 



Fig. 11, Melania usta, Terq. 



Fig. 12, a, b. Melania abbieviata, Terq. 



Fig. 13, a, b. Melania crassilabrata, Terq. 



Fi g. lh, a, b. Melania turbinata, Terq. 



PLANCHE XV. 



Fig. 1, a, b, c. 



Fig. 2, a, b, c. 



Fig. 3, a, b, c. 



Fig. U, a, b, c. 



Fig. 5, a, b, c. 



Fig. 6, a, b, c. 



Fig. 7, a,b, c. 



Fig. 8, a, b, c. 



Tornalella Buviguieri, Terq. 

 Tornatella inilium, Terq. 

 Tornalella secale, Terq. 

 Tornatella inermis, Terq. 

 Orthostoma triticum, Terq. 

 Orlhostoma turgida, Terq. 

 Orthostoma frumentum, Terq. 

 Orthostoma avena, Terq. 



Fig. 9, a, b, c. Orthostoma oryza, Terq. 



Fig. 10, a, b. Neritina arenacea, Terq. 



Fig. 11, a, b. Nerilina hettangiensis, Terq. 



Fig. 12, a, b, c. Nerilina cannabis, Terq. 



Fig. 13, a, b. Trochus Deshayesi, Terq. 



Fig. ili, a, b. Trochus sinistrorsus, Desh. 



Fig. 15, a, 6, c. Trochus Juliani, Terq. 



Fig. 16, a, b, c. Trochus nilidus, Terq. 



PLANCHE XVI. 



Fig. 1, a,b, c. Turbo rotundatus, Terq. 



Fig. 2, a, b, c. Turbo costellatus, Terq. 



Fig. 3, a, b, c. Phasianella nana, Terq. 



Fig. k, a, b. Phasianella liasina, Terq. 



Fig. 5, a, b, c. Pleurotoinaria nucleus, Terq. 



Fig. 6, a, b, c. Pleurotoinaria lens, Terq. 



Fig. 7, a, b, c. Turbo gemmatus, Terq. 



Fig. 8, a, b, c. Solarium lenticulare, Terq. 



Fig. 9, a, b. Trochotoma clypeus, Terq. 



Fig. 10, a, b. Trochotoma vetusta, Terq. 

 Fig. 11, a, b. Pleurotoinaria rotellœformis, Dkr. 

 Fig. 12, a, b. Pleurotoinaria Hennocquii,Terq. 

 Fig. 13, a, b. Pleurotomaria Wanderbachi, Terq. 

 Fig. lu, a, b. Pleurotomaria mosellana, Terq. 

 Fig. 15, a, b. Pleurotomaria trocheata, Terq. 

 Fig. 16, a, b. Turritella Zenkeni, Terq. 

 Fig. 17, a, b, c. Cerithium paludinare, Terq. 



