458 INDEX 



Acrocephalites— Continued. page 



aoris, new species, described 178 



figured pi. 26, figs. 3, 3a-fc 234 



compared with Acrocephalites tutus and A. americanus 178 



formation and locality 178 



stratigraphic range I7S 



f aster, new species, described 178 



figured pi. 26, figs. 9, ga-c 234 



compared with Acrocephalites stenometopus 177, 178, 181 



formation and locality ' 178 



stratigraphic range I75 



? glomcratus, new species, described '. 179 



figured pi. 26, figs. 7, 7^ 234 



compared with Acrocephalites ? majus, A. haynesi, and Pty- 



choparia i79 



formation and locality I79 



stratigraphic range 175 



haynesi, new species, described I79 



figured pi. 24, figs. 4, 4a-b 230 



compared with Acrocephalites ? glomeratus 179 



Acrocephalites insignis I79 



Acrocephalites multisegmentus I77 



Acrocephalites stenometopus and A. tutus 176 



discussed I74. ^75 



formation and locality 179 



type specimen in Museum of Comparative Zoology, Cam- 

 bridge, Mass 179, 230 



insignis, new species, described 179 



figured pi. 25, figs, i, la-b 232 



compared with Acrocephalites americanus 177 



Acrocephalites haynesi I79 



Acrocephalites multisegmentus 180 



Acrocephalites stenometopus 176 



formation and locality 180 



segments 177 



stratigraphic range 175 



f majus, new species, described 180 



figured pi. 26, fig. 1 234 



compared with Acrocephalites ? glomeratus 179 



Acrocephalites multisegmentus 180 



Ptychoparia, Acrocephalites tutus, and A. americanus . . 180 



doubtfully referred 176 



formation and locality 180 



listed 292 



stratigraphic range 175 



multisegmentus, new species, described 180 



figured pi. 24, figs. 5, 5a 230 



compared with Acrocephalites americanus, A. insignis, and 



A. ? majus 180 



Acrocephalites haynesi 177 



