SYSTEMATIC INDEX. 
XXXI 
Family PTEEASPIDiE (continued). 
Page 
Pteraspis rostrata.162 
-crouchi.167 
Palaeaspis.169 
-sericea.169 
—— americana.170 
Cyathaspis.170 
-banksi.170 
—— macculloughi.172 
Order OSTEOSTEACI . 176 
Family CEPHALASPID-<E.176 
Cepbalaspis.177 
-lyelli.179 
-salweyi.181 
-pcnxriei.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 TEEMATASPIDJE.201 
Tremataspis.201 
-scbrenki.202 
