INDEX. 



Page. 



ACEPHALA, 166 



Ac ER ID.E, 14 



Achatina flammigera, ... 56 



— solida, 56 



— striata, 56 



— vexillum, 56 



— virginea, 56 



Alasmodon arcuata, 197 



— corrugata, . . . 198 



— marginata, .. 196 



— undulata, .... 198 



— rugosa, 196 



Amphidesma aequalis, . . . 238 



— flexuosa, . . . 237 



— lepida, .... 238 



— oibiculata, . 237 



— punctata, . . 237 



— radiata, .... 238 



— transversa, . 237 

 Amnicola cincinnatensis, . 88 



— grana, 88 



— limosa, 88 



— lustrica, 87 



— nickliana, .... 88 



— porata, 88 



Ampullaria depressus, ... 124 



— hopetonensis, 124 

 [Fauna — Part 6.] 



Page. 



Ampullaria paludosa, . . . 124 



Anatina papyracea, 235 



ANATINID.E, 234 



Anatifa anserifera, 254 



— dentata, 255 



— lffivis, 255 



— vitrea, 255 



Anculotus angulatus, .... 102 



— carinatus, .... 101 



— costatus, 102 



— dentatus, 102 



— melanoides, .. 102 



— monodontoides, 102 



— nigrescens, . . . 102 



— pictus, 103 



— proerosus, . . , . 103 



— plicatus, 103 



— pumilus, 103 



— subglobosus, . . 1 03 



— taeniatus, . . . . . 103 



— trivittatus, .... 102 

 Ancylus calcarius, 13 



— diaphanus, .... 13 



— filosus, 13 



— fuscus, 13 



— nuttallii, 13 



— parallelus, 13 



35 



Page. 



Ancylus rivularis, 12 



— tardus, 12 



Anodon benedictensis, . . . 204 



— edentula, 201 



— excurvata, 202 



— ferussaciana, ... 200 



— fluviatilis, 203 



— implicata, 202 



— pavonia, 203 



— plana, 201 



— subcylindracea, . 200 



— unadilla, 199 



Anomia aculeata 168 



— ephippium, 168 



Arcade, 176 



Area incongrua, 177 



— pexata, 1 76 



— ponderosa, ....... 177 



— transversa, 177 



Arion hortensis, 23 



Ascidea manhattensis, . . . 259 



— lobifera 259 



— ovalis, 259 



— plicata, 259 



— proboscidea, . . . 259 



— rustica, 259 



Astarte castanea, 220 



