INDEX. 



Page. 

 ACEPHALA, 166 



ACERID£, 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 



— orbiculata, . 237 



— punctata, . . 237 



— radiata, .... 238 



— transversa, . 237 

 Amnicola cincinnatensis, . 88 



— grana, 88 



— limosa, 88 



— lustrica, 87 



— nickliana, .... 88 



— porata, 88 



Ampullaria depressus, ... 124 



— hopotonensis, 124 

 [Fauna — Part 6.] 



Page. 



Ampullaria paludosa, . . . 124 



Anatina papyracea, 235 



AnatiniDjE, 234 



Anatifa anserifera, 254 



— dentata, 255 



— IcBvis, 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, . . 103 



— IcEniatus, 103 



— trivittatus, . . . . 102 

 Ancylus calcariiis, 13 



— diaphanus, .... 13 



— filosus, 13 



— fuscus, 13 



— nuttallii, 13 



— parallelus, 13 



35 



Page. 

 Ancylus rivularis 12 



— tardus, 12 



Anodon benedictensis, . . . 204 



— edcntula, 201 



— excurvata, 202 



— ferussaciana, . . . 200 



— fluviatilis, 203 



— implicata, 202 



— pavonia, 203 



— plana, 201 



— subcylindracea, . 200 



— unadilla, 199 



Anomia aculeata 168 



— ephippium, 168 



Arcad.5;, 176 



Area incongrua, 177 



— pexata, 1 76 



— ponderosa, 177 



— transversa, 177 



Arion hortcnsis, 23 



Ascidea manhattensis, . . . 259 



— lobifera, 259 



— ovalis, 259 



— plicata, 259 



— proboscidca, . . . 259 



— rustica, 259 



Astartc castanea, 220 



