SYSTEMATIC INDEX. 
XXXI 
Family PTER-ASPID2E ( continued). 
Pteraspis rostrata . 
-crouch! . . . . 
Palmaspis.« 
-sericca. 
-amcricana . 
Cyathaspis. 
--banksi . 
•-macculloughi . . . 
Page 
162 
167 
166 
169 
170 
170 
170 
Order OSTEOSTRACX . , . 
Family CEPIIALASPIDaE . 
Cephalaspis . 
A A 
-lyelli 
- sal wry i 
-powrici 
-page! 
-murchisoni 
-lightbodii , 
-campbelltonensis 
-dawsoni 
--laticeps 
Eukeraspis . . 
-pustulifera 
Auchenaspis . . . 
——- salteri . 
-egertoni 
—verrucosa . 
Didyrnaspis . 
-grindrodi . 
176 
176 
177 
179 
181 
182 
183 
185, 
190 
190 
192 
192 
193 
103 
195 
106 
196 
108 
109 
109 
Family TREMATASPIDyE 
Tremataspis . 
-schrenki 
201 
201 
202 
