INDEX. 237 



PLATBS. 



Platyostoma 



lineata 19, 21 



lineata, var. callosa 21, 22, 25 



niagarense 33 



turbinata _ 21 



turbinata, var. cochleata 



Pleurotomaria 



arabella . 26 



casii 26 



lucina 



procteri 21 



sulcomarginata 21 



Polyphemopsis 



louisvillae. 20 



Strophostylus 



varians 22 



Trochonema 



f atua 



rectilatera 20 



yandellana 20 



Turbo 



shumardi 19, 22 



CEPHALOPODA. 



Gomphoceras 



oviforme - 21 



turbinif orme 21 



Goniatites 



discoideus - -- 20 



Lituites 



marshi --- 30 



Nautilus 



maximus. . 24 



