FOSSILS. 137 



Polyzoa. continued 



? Cycleria scala. Tertiary, India. 

 Fragment of a Zoarium. France. 



M o 1 1 u s ca. 

 Cephalopoda. 



Nautilus decipiens. near Mentone. 

 Hamites attenuatus. GauU and Greenland. 



rotimdus. 



Arietites spiritissimus, cast of, Lias. 

 Amaltheus margaritatus. Middle Lias. 

 Harpoceras murchisonise. 



radians. 

 Haploceras arolicum. 

 Dactylioceras commune. Upper Lias. 



tinged with Marcasite. Whitby. England. 



cut and polished. 



Stephanoceras humphriesianum. Upper L'KIS, Fratsac, France. 

 Aspidoceras basilicas* 

 Hoplites tuberculatus. 

 ? sp. Ganges. 



Ammonites communis. Upper Lias, Britain, 

 ? biplex. Coralline Oolite. 



bifrons. Upper Lias. 



armatus. Jurassic. 



cristatus. 



rostratus. 



