XIV SYSTEMATIC INDEX. 



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 Family non det . 218 



Arcbaeocbelys valdensis 219 



Protocbelys stricklandi 220 



Cbelytberium obscurum 222 



Suborder II. ATHECATA 223 



Family DEEMOCHELYID^E 223 



Psepbophorus, sp 224 



Eosphargis gigas 225 



Family PROTOSTEGIDiE ........ 228 



Protostega anglica 229 



Ordinal Position Uncertain 231 



Psepboderma alpinum 231 



anglicum 231 



Genus non det 232 



ADDENDA 233 



Stegocbelys planiceps 233 



Generically undetermined specimens . . 234 



