X1Y SYSTEMATIC INDEX. 



Family ICHTHYOSAURID.E (continued). 



Page 

 Ichthyosaurus tenuirostris 83 



latifrons 89 



lonchiodon 92 



8 P- 94 



platyodon 94 



trigonodon 105 



List of species not mentioned above . . 113 



Mixosaurus 114 



Synaptosaurian Branch . .' 118 



Order SAUROPTERYGIA 118 



Family PLESIOSAUBID^E 120 



Pliosaurus brachydirus 123 



evansi 128 



grossouvrei 130 



macromerus 131 



Immature specimens ...... 139 



ferox 145 



Peloneustes sequalis 152 



philarchus 154 



Thaumatosaurus indicus 160 



oolithicus 160 



cramptoni 161 



— arcuatus . 163 



megacephalus 166 



carinatus 168 



propinquus 170 



Genus non det. (I lesiosaurus ellipsospon- 



tylus) 172 



Polyptychodon interruptus 173 



** continuus 179 



Cimoliosaurus cantabrigicnsis .... 183 



bernardi 185 



tenuis 188 



valdonsis . 188 



