INDEX. 



In the present Index all synonyms and spurious species are in italics. Where several 

 references are given for one name, the first relates generally to the page containing the 

 full description. 



Alima, 103 



Ambloxis (Amblostoma') major, 46, 42 



Amnicola, 80 



Amnicola albilabris, 88 



attenuata, 68 



cincinuatiensis, 85 



decisa, 85 



dentata, 88 



depressa, 77 



egena, 88 



elongata, 68, 88 



galbana, 88 



gibbosa, 88 



gracilis, 88 



granum, 86, 63 



hindsi, 91, 90 



Integra, 79, 88 



isogona, 77 



lapidaria, 94 



limosa, 84, 83 



longinqua, 87 



lustrica, 81, 83, 95 



nicUniana, 69 



nuttalliana, 88, 89 



obtusa, 70 



orbiculata, 87 



pallida, 83, 88 



parva, 87 



porata, 82, 80, 84 



protea, 71 



rowellii, 73 



sayana, 81, 88 



semlnnlis, 88, 90 



tenuipes, 69 

 Ampullaria, 2 

 Ampullaria angulata, 7 

 borealis, 6 

 cerasum, 7 

 crassa, 39, 6, 37 

 depressa, 4 

 disseminata, 5 

 fiagellata, 7 



Ampullaria Jtatilis, 7 

 fumata, 7 

 ghiesbreghti, 7 

 globosa, 7 

 hopetonansis, 5, 4 

 intertexta, 18 

 malleata, 7 

 miltochi ihis, 7 

 paludino'dps, 7 

 paludosa, 4 

 penesima, 5 

 perovata, 8 

 rejlexa, 7 

 rotundata, 6 

 rugosa, 7 

 scalaris, 7 

 urcens, 7 

 violucea, 7 



Ampullariidae, 1 



Anculotus fitscux, 92 

 integer, 79 

 nuttallii, 90, 92 

 pumilus, 80, 79 



Asolene, 2 



Bythinia, 88 

 Bythinia seminalis, 90 

 Bythinella, 67 

 Bythinella attenuata, 68 



binneyi, 69 



nickliniana, 68, 67 



obtusa, 70 



tenuipes, 69 



Chilocyclus cincinuatiensis, 81 

 Chondropoma, 95 

 Chondropoma dentatum, 96, 95 

 Cingula aculeus, 62 

 minuta, 61 

 C/iVAon, 102 



Cochlea virginiana, 43, 42 

 Cochliopa, 72 



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