Acrocephalites — Continued. page 



/ vulcanus (Billings), described 182 



figured pi. 26, fig. 2 234 



formation and locality 182 



stratigraphic range 175 



synonymy 182 



Acrothele bellula Walcott, associated with Crcpiccphalus coosensis 206 



colleni Walcott, associated with Vanuxemella contracta 222 



associated with Vanuxemella nortia 223 



panderi Walcott, associated with Vanuxemella contracta 222 



Acrotreta kutorgai Walcott, associated with Crepicephalus coosensis 206 



Agnostus Icevigatus zone, Acrocephalites from 175 



Middle Cambrian locality 30911 181 



Agraulos Corda, genus named 173 



associated with Tsinania cleora Walcott 227 



ceticephalus Barrande, compared with Agraulos stator 173 



stator, new species, described 173 



figured pi. 36, fig. 6 254 



associated with Vanuxemella nortia 223 



compared with Agraulos ceticephalus Barrande 173 



formation and locality 174 



observations 173 



Alabama, Acrocephalites in i j:^ 



Crepicephalus in 203 



Middle Cambrian localities i6d, 90, 112 178 



locality 90X 178, 206 



locality 95 178 



locality 112 178, 180 



locality 112a 180 



Norwoodia in 169 



Upper Cambrian locality 16 218 



localities 16a, 89, 139a 214 



locality 90a 170, 171, 213 



locality 91 170, 171, 213, 215, 218 



locality 145a 215 



localities 92X, 92XX 170 



locahty 138 172 



locality 139a 190 



locality 145 170, 171 



locality 358e 170, 178, 215 



Alberta, Lower Cambrian locality 35111 174 



Albertella, compared with Vanuxemella 221 



bosworthi Walcott, associated with Vanuxemella nortia 223 



helena Walcott, associated with Vanuxemella contracta 222 



associated with Vanuxemella nortia 223 



Albertella zone. Lower Cambrian locality 351TI 174 



10 



