﻿SYSTEMATIC INDEX. 



XXXI 



Family PTERASPID^E (continued) 



Pteraspis rostrata 



crouchi . 



Palaeaspis . . 



sericea . 



americana 



Cyathaspis 



banksi . 



macculloughi 



Page 

 162 



167 



169 



169 



170 



170 



170 



172 



Order OSTEOSTRACI 176 



Family CEPHALASPID^E 176 



Cephalaspis 177 



lyelli 179 



salweyi 181 



powriei 182 



pagei 183 



murchisoni 185 



lightbodii 190 



campbelltonensis 190 



dawsoni 192 



laticeps 192 



Eukeraspis 193 



pustulifera ........ 193 



Auchenaspis 195 



salteri 196 



egertoni 196 



verrucosa 198 



Didymaspis 199 



grindrodi 199 



Family TREMATASPID^E 201 



Tremataspis 201 



schrenki 202 



