CONTENTS; 

 LETTER VII. 



PlL^f. 



Fossil Shells continued. Cerithium...Trochus.Solarium... Turbo. ..Monodonta... Delphi nula... 

 Cyclostoma...Scalaria...Turritella...Pupa...Janthina...Bulla....Bulimus....Achatina....Phasia- 

 nella...Lymnaea...Pyramidella...Melania.... Auricula... .Volvaria....Ampullaria....Planorbis... 

 Helix. ..Helicina..,Nerita...Natica...Testacella...Stomatia...Carinaria....Haliotis....Sigaretus... 

 Argonauta fi<> 



LETTER VIII. 



Nearly straight or irregularly twisted shells, with simple or divided' Cavities. ..Penicillus... Den- 

 talium...Vermicularia.,.Serpula...Siliquaria 9L 



LETTER IX. 

 Multilocular Shells. ..Nautilus. ..Fossil Species... Orthoceta 92 



LETTER X. 



Hippurites... Dalmatian and Veronese Fossils of a similar Appearance... Belemnites, Opinions 

 respecting... Species described UK 



LETTER XI. 

 Ammonites.. .Baculite...Hamites...Scaphites...Turrilites 133 



LETTER XII. 



Nummulites....Discorbis....Rotalites....Lenticulina....Lituola...,Spirolina...Miliola...Renulina... 

 Gyrogonites M .,... 148 



LETTER XIII. 



Biralves with equal Valves, and regularly formed... Pinna.. .Mytilus...Modiola...Anodonta... 

 Unio...Nucula...Pectunculus...Arca...Cucullcea...Trigonia...Tridacna...Hippopus...Cardita... 

 Isocardia...Cardium...Crassatella...Paphia...Lutraria...Mactra....Erycina....Petricola...Donax 

 ....Trigonellites....Venus....Cytherea....Venericardia....Cyclas....Lucina....Tellina...Capsa... 

 Solen..,Sanguinolaria...Glycemeris...Mya.J > anopea. ....; , 155 



LETTER XIV. 



Pholas...FistuIana... Teredo. ..Diceras...Acardo...Radiolites...Chama....Spondylus....Plicatula... 

 Gryphaea.-.Ostrea , IQ 7 



LETTER XV. 



Vulsella.. .Malleus.. ,ATicula...Perna...Crenatula...Placuna...Harpax....Pecten... .Lima. ..Pedum 

 .. .Pandora.. .Corbula.., Anemia. .. Crania. ..Terebratula...Calceola...HyaIaea....Orbicula... .Ian- 

 gula...Balanus...Tubicinella...Coronula...Anatifa 218 



LETTER XVI. 

 Fossil Fish.,. of Vestena Nuova, Pappenheim, Mansfeld;, &c....of England t ,,,,,, ,,,,,. 



