SECTION A.] NOKTH AMERICAN CONCHOLOGY. 



61ii 



No. 



121 Terebratnla caput-ser- 



pentis Lam. 

 T. septentrlonalis Couth.. 



122 psittacea Gmel. 



123 CMton albus Mont. 



C sagrinatus Couth.. 



124 apiculatus Say. 



125 anus Sowb. 



C. Emersonii Couth. 



126 falminatus Couth. 



127 marginatus Pennant. 



128 ruber Lowe. 



129 Patella Candida Couth. 



130 Lottia alveus Gould. 



131 testudinalis Gould. 



Patella amoena Say. 



132 (sp. ind.) 



133 Dentalium dentale Linn. 



134 Cemoria uoachina Gould. 



Patella noachina Liun. 



135 Crepidula convexa Say. 



136 fornicata La7n. 



137 glauca Say. 



138 plana Say. 



139 Bulla canaliculata Gould. 



140 debilis Gould. 



141 Gouldii Couth. 



142 hiemalia Couth. 



143 insculpta Totten. 



144 lineolata Couth. 



145 obstricta (Jould. 



146 oryza Totten. 



147 triticea Couth. 



148 Helix albo-labrla Say. 



149 alternata Sai/, 



II. scubrn Lam. 



150 arborea Say. 



151 ceUaria Mull. 



152 chersina Say. 



153 electrina Gould. 



154 hortensis Mull. 



155 subglobosa (var.) Binn. 



156 lineata Say. 



157 indentata Say. 



158 labyrinttdca Say. 



I No. 

 159 



160 



161 



162 

 163 

 164 

 165 

 166 

 167 

 168 

 169 

 170 

 171 

 172 

 173 

 174 

 175 

 176 

 177 



178 

 179 

 ISO 

 181 

 182 

 183 

 184 

 185 

 186 

 lb7 

 188 

 189 

 190 

 191 

 192 

 193 

 194 

 195 

 196 

 11)7 

 11^8 



Helix monodon Rack. 

 H. fraterna Say. 



hirsuta Say. 



H. fraterna Wood. 



pulchella Mull. 

 H. minuta Say. 



striatella Anth. 



thyroidus Say. 



tridentata Say. 

 Pupa contracta Say. 



curvidens Gould. 



exigua Say. 



fallax Say. 



milium Gould. 



modesta Say. 



simplex Gould. 



Tappaniana Ward. 

 Bulimus lubricus Brag. 

 Succinea avara Say. 



campestris Say. 



ovalis Say. 

 Auricula bidentata Gould. 

 Melampus hidtntatus 



Say. 



denticulata Gould. 

 Planorbis armigerus Say. 



bicarinatus Say. 



campanulatus Say. 



deflectus Say. 



dilatatus Gould. 



elevatus Ad. 



exacutus Say. 



hirsutus Gould. 



lentus Say. 



parvus Say. 



trivolvis Say. 



virens. 

 Phyaa ancillarla Say. 



elongata Say. 



heterostropha Say. 

 Limnaea columella Say. 



chalybea (var.) Gould. 



catasc opium Say. 



elodes Say. 



desidiosus Say. 



