— 286 — 



Plnnorbis Guett. contin. 

 Synon. contin. 

 Cornu Da Costa. 

 Angarius Meuschen. Martini. 

 Umbilicites (sp.^ Auctt. 

 Cochlites (sp.) Gmel. 

 Nautilus (sp.) Mont. 

 Anisus (pars) Studer. 

 ? Segmentina Flem. q. cf. 

 Anisus et Planorbis Fitz. 

 Bathyomphalus, Hippeu»is et Gyraulus Agass. 

 Spirorbis, Helisoma et Planorbis Swains. 

 Bathyomphalus, Spirabna, Gyraulus, Armiger, 

 Hippeutis et Planorbis Hartm. 

 Planorbis Bolten 1798. Mus. (ed. 2a 1819. p. 51,) 



= Planorbis Petiv. et Ampullaria (sp.) Lamck. 

 Planorbites Lamck. olim 1799. Prodr. * 

 Etym. Vocab. hybr. : Planus; orbis. 

 Ab Ammonitis perperam segregatum genus, postea 

 Planulites. 

 Planospirites Lamck. olim 1801. Syst. p. 400. 

 Etym. Vocab. hybr. : Planus; spira. 

 Genus Cephalaeorum univalvium non spiralium, per- 

 peram fictum ex incompleto Exogyrae cujusdam 

 specimine. 

 Adoptat cum dubio Roissy 1805. Moll. V. p. 245. 

 Planulites Lamck. 1801. Syst. p. 101. Conf. Defr. 1826. 

 Dict. sc. nat. tom. 41. p. 245. et Desh. Enc. meth. 

 II!. p. 786. 

 Etym. Vocab. hyl)r. : Planus. 

 Ab Ammonitis separatum genus Multilocularium, ab 



ipso auctore derelictum. 

 RoissY 1805. Moll. V. p. 28. 

 MoNTF. 1808. Conch. syst. I. p. 78. 

 Febuss. 1821. Tabl. syst. p. XXL — subdivisio Dis- 



corbis. 

 Latr. 1825. Fam. nat. — genus Ammonitarum. 



