CONTENTS. 
LETTER VII. 
Page 
Fossil Shells continued. — Cerithium, . .Trochus. . .Solarium. . .Turbo. . .Monodonta. . .Delphinula. . .Cyclos- 
toma... Scalaria...Turritella... Pupa... Janthina... Bulla... Bulimus...Achatina...Phasianella...Lymnsea 
...Pyramidella.. .Melania... Auricula.. .Volvaria...AmpuIlaria...Planorbis... Helix.. .Helicina...Nerita 
...Natica...Testacella...Stomatia...Carinaria...Haliotis...Sigaretus...Argonauta, 69 
LETTER VIII. 
Nearly straight or irregularly twisted Shells, with simple or divided Cavities. ..Penicillus...Dentalium... 
Vermicularia. . . Serpula. . . Siliquaria, 
LETTER IX. 
Multilocular Shells.. .Nautilus.,.Fossil Species. ..Orthocera, 
LETTER X. 
Hippurites... Dalmatian and Veronese Fossils of a similar Appearance.. .Belemnites, Opinions re- 
specting.. .Species described. 
LETTER XI. 
Ammonites.. .Baculites...Hamites...Scaphites...Turrilites, 133 
LETTER XII. 
Nummulites....Discorbis....Rotalites....Lenticulina....Lituola....Spirolina....Miliola....Renulina...Gyro- 
gonites, 
LETTER XIII. 
Bivalves with equal Valves, and regularly formed... Pinna.. .Mytilus...Modiola...Anodonta...Unio... 
N ucula. . . Pectunculus. . .Area. . . .Cuculloea. ..Trigonia. . .Tridacna. . . . Hippopus. . .Cardita. . .Isocar dia. 
Cardium...Crassatella...Paphia...Lutraria...Mactra,..Erycina...Petricola...Donax...Trigonellites... 
Venus.... Cytherea....Venericardia...Cyclas....Lucina....Tellina....Capsa....Solen....Sanguinolaria... 
Glycemeris...Mya...Panopea, 165 
LETTER XIV. 
Pholas . . . . Fistulana. . . . Teredo .... Diceras ... . Acardo .... Radiolites .... Chama ... . Spondylus . . . . Plicatula. . . . 
Gryph<ea...Ostrea, . ..197 
LETTER XV. 
Vulsella... Malleus... Avicula...Perna...Crenatula...Placuna...Harpax...Pecten... Lima... Pedum... Pandora 
...Corbula.*.Anomia... Crania... Terebratula...Calceola...Hyahea....Orbicula... Lingula.... Balanus... 
Tubicinella...Coronula...Anatifa, 
LETTER XVI. 
Fossil Fish.. .of Vestena Nuova, Pappenheim, Mansfeld, &c....of England, 
.. 243 
