244 INDEX. 



Cyclonema cancellata ..................... _______ ..... ... .......... . . 187 



multilira ____ ............ ... ..... ____________ ......... ___________ 188 



rugaelineata ........ _________________ ____ ....... ________________ 187 



Euomphalus decewi _____________________________ ..... _________________ 181 



sampsoni ________________________ ..... . . ........... ______ ...... 182 



Loxonema hamiltoniae ____ ...... _____________ ................. ________ 177 



hydraulicum .......... _____ ..... . ____________ ........ ________ ._ 178 



laeviusculum _________________________ .......... ________ ..... .. 178 



rectistriatum ________________ . ................. _____ ......... .. 179 



Macrocheilus carinatus ..... ________ ....... ........ ___________ _______ 180 



Murchisonia desiderata ______ ..... _________ .......... ____ ........... _ . 169 



petila ........... ____________ ..... _____________ ..... _____________ 170 



Platyceras bucculentum . . ...... ._ ....... _______________ .............. 160 



compressum ......... __________________ ....... __________________ 162 



conicum ____________________________________ ...... _____________ 161 



dumosum ................ ___________ ........ __________ ...... . _ _ 162 



dumosum, var. rarispinum _________________ ....... _______________ 163 



echinatum ........ ....... ___ ..... . ..... _ _ ....... ______________ 164 



erectum ...... __________ ......... ___________________________ ..... 165 



milleri ........ ___________ ........ . ..... _______________________ 166 



multispinosum ...... ______ ..... _________________________ ..... . . 166 



rictum . ..... _____________ ________________________________ ...... 166 



symmetricum ... ..... __________________________________________ 167 



thetis .............. _____________________________________________ 1 68 



unguiforme _______________________________________________________ 168 



ventricosum __________ _______________________ ........ ___________ 168 



Platyostoma lineata ________________ . ... ...... ______________________ 183 



lineata, var. callosa _____________________________________________ 184 



niagarense ____________________ ..... ____________________ ' ______ . ____ 185 



turbinata _________________ _____________________________________ 184 



turbinata, var cochleata ______________________ ..... ______________ 185 



Pleurotomaria arabella ........... _ ..... _____ ..... _____________________ 171 



casii _______ ...... . . ...... _____________________________________ 171 



lucina. ............ ____________ ..... _______ .. ____ . _____________ 172 



procteri ____ ........ _ .......... .. ..... __________________________ 173 



suJcomarginata _____________________ ....... ____________________ 174 



Polyphemopsis louisvillae _______ ........ _______________________________ 180 



Strophostylus varians ________________________________________________ 186 



Trochonema f atua ...... .......... ________________________________ ____ 189 



rectilatera ........ _______________ ...... . . ...... __________________ 189 



yandellana .......... __________________________________________ 190 



Turbo shumardi . 191 



