INDEX 



To the genera AMNICOLA, AMPULLARIA, PALUDINA, and VALVATA. Synonyms 

 are in italics. The part devoted to each genus is paged separately. 



Amnicola attenuata, . p. 22, fig. 13 

 cincinnatiensis, 9, f. 4 

 cincinnatiense, 19 



decisa, . 7, f. 13 

 elongata (err cler.) 



f. 9 

 17 



18, f. 10 

 10, f. 5, 6 



16 



10, 12 

 21 f. 12 

 24 

 f.7 

 24 

 f. 8 

 10 



19, f. 11 

 23, f.14,15 

 . . . 5 



. 10 



12, 

 13, 



galbana, 

 granum, . 

 lapidaria, 

 limosa, . 

 lustrica, . 

 lustrica, . 

 nicliniana, 

 orbiculata, 

 pallida, . 

 parva, . . 

 porata, . 

 porata, 

 sayana, . 

 tenuipes, 



Ampullaria depressa, 

 flagellata, 



Slobosa, o 

 opetonensis, ... 5 

 ? intertexta, . ... 11 



paludosa, 5 



rotundata, .... 8 



rugosa, 11 



urceus 11 



Oyclostomacincinnatiensis,A.w.in.coiA.,l9 

 Nerita urceus, . . . AMPULLARIA, 11 



Paludina angulata, 35 



bengalensis, .... 24 



bimonilifera 35 



carinata, 26 



carinata, 8 



cincinnatiensis, AMNIC., 9 



coarctata, 36 



coosaensis, 36 



Paludina cornea, 4 



cyclostomaformis, . . 38 



decisa, 4 



elongata \\ Sw., .... 24 



fasciata, Bowd., ... 24 



genicula, 15 



georgiana, 23 



grana, , . AMNICOLA, 17 



heterostropha, .... 4 



incrassata 36 



integra, 10 



intertexta, 31 



lapidaria, . AMNICOLA, 18 



limosa, . . AMNICOLA, 10 



limosa (Val.), .... 4 



lineata, 17 



lustrica, AMNICOLA, 10, 12, 16 



magnifica, 33 



multilineata, .... 24 



nickliniana, . AMNICOLA, 21 



obtusa, . . AMNICOLA, 24 



ponderosa 13 



porata, . AMNICOLA, 10, 13 



subcarinata, .... 8 



subpurpurea, .... 28 



transversa, 31 



yivipara 17 



Valvata bicarinata, . "\ . . . 5 



carinata, 3 



humeralis, g 



pupoidea, lo 



simplex, 5 



sincera, 6 



transversa, 33 



troostiana, 35 



tricarinata s 



unicarinata, 6 



