GENERAL INDEX. 



499 



Genera of Cephalopoda, characters of {continued) — 

 Scaphites, Parkinson 

 Schloenbachia, Neumayr 

 Sepia, Linni 

 Simoceras, Zittel 

 Spirulirostra, cCOrhigny 

 Stephanoceras, Waagen 

 Stoliczkaia, Neumayr 

 Streptoceras, Billings 

 Teudopsis, Deslongchamps 

 Thysanoceras, Hyatt 

 Toxoceras, (TOrbigny 

 Trachyceras, Laube 

 Tretoceras, Salter 

 Trochoceras, Barrande 

 Tropidoceras, Hyatt 

 Tropites, Mojsisovics 

 Turrilites, Lamarck 



224, 228, 



229, 231 



215, 255 

 . 241 

 . 205 

 . 262 

 . 206 

 251, 471—481 

 . 258 

 . 209 

 . 205 

 . 235 



215, 260 

 . 242 

 . 210 

 . 210 

 . 236 

 , 241 



216, 244 



Horizons of Lower Lias in the European area . 

 Middle 

 ,, Upper „ „ 



65 

 112 

 164 



Liferior Oolite Ammonite zones 

 Iron-stone workings in Middle Lias 



150—162 

 96, 100 



Jet rock ..... 



Junction of Lower Lias with Keuper, Penarth Heath, near Cardiff 

 „ „ Vale of Gloucester . 



120, 124 

 . 10 

 . 18 



Lias — Lower beds, description of 

 „ Middle beds ,, 



,, Upper beds ,, 



Liassic zones, foreign correlations of — 

 Aegoceras angulatum-zone — 

 In France 

 „ North Germany 

 Aegoceras Henleyi-zone — 

 In Brunswick 

 ,, North Germany 

 Aegoceras Jamesoni-zone— 

 In France 

 „ North Germany 

 „ South-west Germany 



14—66 



67—112 



114—150 



32—35 

 . 31 



91 

 91 



79 



79 



