X 
INDEX. 
Ammonites, 16 
Ammonites proper, 16 
Planitcs, .1 6 
Ceratites, 16 
Orbnlites, 16 
Scaphites, 16 
Baculites, 16 
Hamites, 1 6 
7'urrilites, 1 6 
Camerines, 17 
Siclerolitlies, 17 
Helicostega, 18 
Helicostcga nantiloidea, 18 
Helicostega ammonoida, J8 
■ Helicostega tnrbinoida, 18 
Stycostega, 18 
Enallostega, 19 
Agathistega, 19 
Entomostega, 19 
CLASS IL— PTEROPODA 
Clio, 20 
Cymbulia, 20 
Pneumodermon, 20 
Limacina, 20 
H3'^alea, 20 
Cleodora, 21 
Clcodora proper, 22 
Creseis, 22 
Cuvieria, 22 
Psyche, 22 
Eurybia, 22 
Pyrgo, 22 
CLASS IIL— GASTEROPODA. 
Order L— PULMONEA, 27 
Pidmonea Terrestria. 
Li max, 29 
Limax proper, 29 
A lion, 31 
Lima, 32 
Vaginulus, 32 
O’estacella, 33 
Parmacella, 33 
Helix, 33 
Helix proper, 33 
Adtrina, 34 
Bulimus, 34 
Bulimus proper, 34 
