1854.] 



HAMILTON MAYENCE BASIN. 



293 



Table VII. {continued). 



Cypricardia pectinifera, Sow. 



Cardita (aflf. C. aculeata, Poli). 



Avellana, Phil. 



* orbicularis, Bronn. 



analis, Phil. 



Crassatella intermedia, Nyst. 



V&ctmvcxAmidff.P.jmlvinatuSjham.). 



Limopsis granulata, Lam. 



Nucula Dechenii, Phil. 



Leda Galeottiana, Nyst. 

 *Pinna margaritacea. Lam. 

 *Panopa3a Hebertiana, Bosq. 



Pecten Solea, Desh. 



Ostrea ventilabrum, Goldf. 



, sp. undeterm. 



Anemia orbiculata, Nyst (non 

 Brocchi). 



Bulla apicina, Phil. 



, sp. undeterm. 



Tornatella, n. sp. (aiF. T. simulata, 

 Brand.) 

 *Natica Hantoniensis, Sow. 

 * glaucinoides, Sow. 



Calyptrsea, sp. undeterm. 



Littorina sculpta, Sow. 



Scalaria, n. sp. 



Turritella, n. sp. 



Planaxis, n. sp. 



Solarium plicatum, Lam. 



Pleurotoma turbidulum, Nyst. 

 * conoideum. Brand. 



Volgeri, Phil. 



uniseriale, Desh. 



* flexuosum, Milnsf. 



* Waterkeynii, Nyst. 



granulatum, Lam. 



* Selysii, De Kon. 



var. semilceve, Phil. 



Pleurotoma multicostatum, Lam. 



ventricosum, Lam. 



attenuatum. Lam. 



Borsonia, n. sp. 

 *Fusus elongatus, Nyst. 



funiculosus, Lam. 



plicatellus, Lam. 



conjunctus, Desh. 



, sp. undeterm. 



Pyrula laivigata, Lam. var. 



clathrata, Lam. 



*CanceIlaria evulsa, Brand. 



, n. sp. 



Typhis, sp. 

 *Tritonium argutum, Brand. 



Chenopus, sp. 

 *Cassidaria depressa, v. Buch. 



Buccinum fusiforme, Desh. 



Mitra marginata, Lam. 



, sp. 



Terebra, sp. 



Voluta semigranosa, Nyst. 



sutiiralis, 



labrosa, Phil. 



eximia, Beyr. 



Cyprsea sphserica, Phil. 



Marginella ovulata, Lam. 



Terebellum, sp. 



Ancillaria, n. sp. 



buccinoides, Lam. 



Conus Allionii, Michelotti. 



Dentalium acutum, Heb. 



, sp. 



Serpula turbinata, Phil. 



Nonionina magdeburgica, Phil. 



Lunuhtes, sp. 

 *Lamna cuspidata, Ag. 

 * contortidens, Ag. 



VII. Lastly, I will only briefly allude to the freshwater deposits 

 of Bavaria and of Wurtemberg, found in the neighbourhood of Ulm. 

 These contain nearly the same land and freshwater Molluscs as the 

 Littorinella-limestone of Hochheim and Wiesbaden ; but I am not 

 aware that they have ever yet been found to rest on or to be as- 

 sociated with the marine tertiaries. They represent great inland 

 freshwater lakes, and are therefore not so directly connected with the 

 objects of this memoir. 



Having thus briefly laid before the Society the principal facts con- 

 nected with those tertiary marine formations which are found in the 

 nearest propinquity to the Mayence basin, we shall be enabled to 

 form some opinion as to the real connection between these beds and 

 the ancient ocean. It seems probable that at some period during the 

 middle tertiary epoch a communication existed between what now 

 forms the Mediterranean to the south, and the great northern ocean 



