INDEX. 



In this Index, names of groups and species not belonging to the family Rissoid;e, and 

 all synonyms, are in italics. 



Acicididx, 29 



Alvania, 1, 4 



Amiiicola, 1, 4, 7, 9, 12, 38,48, 52, 55 



Amnicola altilis, 20, 28 



attcnuata, 20 



corolla, 50 



decisa, 16, 53 



depressa, 20, 52 



galbana, 16 



graua, 16 



Hindsii, 26, 54 



Integra, 20, 21 



isoguna, 20 



lapidaria, 8, 29 



liinosa, 13, 17, 52 



lustrica, 16 



Nickliniana, 19 



Nuttalliana, 20 



obtusa, 20 



orbiculata, 16 



pallida, 16, 53 



parva, 16 



porata, 10, 11, 52, 53 



porata, 12, 52 



protea, 49 



Rowellii, 50 



Sayana, 33, 35 



tenuipes, 20 



(^Subulina) thermalis, 17, 19 

 Amnicolidx, 9 

 Amnicolinsp, 5, 9, 11 

 Ancylosse, 11 

 Assiminea, 2 



Barleeia, 1 



Bittium, 49 



Blanfordia, 2, 36, 37 



Bulimus viridis, U 



Bythinella, 2, 4, 9, 12, 17, 44, 46, 55 



Bjthinella abbreviata, 45 



bicarinata, 47 



Binneyi, 45 



brevis, 45 



conoidea, 45 



ferrusina, 44 



Bythinella gibba, 45 



marginata, 45 

 Nickliniana, 45 

 similis, 45 

 thermalis, 44 

 viridis, 10, 17, 44 

 vitrea, 44 



Bythinia, 2, 4, 9, 10, 17, 20, 56 



Bythinia bicarinata, 47 



Bytliiuiinae, 4, 5, 9 



Campeloma, 24, 49 

 Cardisoma, 30 

 Cec/«a, 2, 36, 37 

 Ceratia, 1, 4 



Chilocyclus, 1, 4, 9, 35 

 Cingula, 1, 4 



Cinqula minuta, 6, 20, 42 

 Cociiliopa, 4, 50, 55, 56 

 Cochliopa Rowellii, 50 



Coenohita, 30 



Cremnobates, 2, 36, 37 



Cremnobates Synhydrasnsis, 38 



Cyclostoma, 1, 8, 37 



Cyclostotna acutum, 45 

 simile, 45 

 viride, 44 

 vitreum, 44 



Eburna, 49 

 Ecrobia, 42 

 £:/ona, 4, 17 



Fenella, 2,4 „„ r. <.r 



Fluminicola, 4, 12, 24, 26, 39, 54, 55 

 Fluminicola Hindsii, 54 



nuclea, 54 



Nuttalliana, 26, 54 



seminalis, 54 



virens, 54 

 Fossarus, 37 



Gahhia, 56 



Gabbia austraas, 56 



Gecarcinus, 30 



( 57 ) 



