MANUAL OF THE MOLLUSCA. 



PLATE III. 



AmmonitidcE. 



PAGE 



1. Goniatites Henslowi, Sby. ^-. Garb, limestone, Isle of Man 93 



2. Ceratites nodosus, Brug. . Muschel-kaUf, Wurtemburg 93 



3. Ammonites planulatus, Sby. -|. Chalk-marl, Sussex , 94 



4. rhotomagensis, Brongn. i. Chalk-marl, Sussex 94 



5 < _ . Jason, Reinecke. ^. Oxford clay, Chippenham 94 



6.- bifrons, Brug. \. Lias, Whitby , 94 



7. bisulcatus, Brug. \. Lias, Lyme Regis 94 



8. Crioceras cristatum, Orb. . Gault, S. France 95 



9. Scaphites a^qualis, Sby. |. Chalk-marl, Sussex 95 



10. Ancyloceras spinigeruin, Sby. . Gault, Folkstone 95 



1 1 . Helicoceras rotundum, Sby. Gault, Folkestone 95 



12. Toxoceras annulare, Orb. ^. Neocomian, S. France 95 



13. Baculites anceps, Lam. . Chalk, France 97 



14. Ptychoceras Emericianum, Orb. . Neocomian, S. France 96 



1 5 . Hamites attenuatus, Sby. . Gault, Folkstone 96 



1 6. Turrilites costatus, Lam. i. Chalk-marl, Sussex 96 



