120 



IXDEX. 



Theodoxus, 102 



Theodoxus reclivaius, 104 



Tropiditia carinata, 9 



Truucatella, 97 



Truucatella bilabiata, 99 



califoinica, 100 

 caribffiensis, 98, 100 

 gouldii, 98 

 gracilenta, 100 

 pulchella, 99 

 subcylindrica, 100 

 succinia, 98 

 truncatula^ 100 



Trnncatellidffi, 97 



Tryonia, 70 



Tryouia clatbrata, 71 

 protea, 71 



Tulotoma, 33 



Tulotoma magnifica, 33 



Turbo minatus, 05 



Valvata, 8 



Valvata areni/era, 15 



bicariiiata, 10, 9 



buccata, 15 



carinata, 11, 9 



cinerea, 15 



depressa, 12 



humeralis, 14 



lustrica, 15 



parvula, 15 



pupoidea, 13, 113 



scabrida, 15 



Valvata sincera, 12 



striata, 13, 12 

 subiDiibilicn (I, 15 

 tricariuata, !) 

 laucarindla, 11, 9 

 virens, 14 



Valvatidse, 8 



Vitta, 102 



Vivipara, IIG 



Vivipara bengalensis, 61 

 conradi, (35 

 contecta, 24 

 contectoi<les, 23, 113 

 coosaensis, S2, 3 

 georgiana, 27 

 glabra, 65 

 inornata, 113 

 intertexta, 17 

 leaii, 65 

 leidyi, 65 

 trochiformis, 65 

 liueata, 30 

 multicarinata, 22 

 nehra.scensis, 65 

 raynoldsuna, 65 

 retma, 65 

 subpurpurea, 19 

 texana, 21, 20 

 troostiana, 31 

 vetusta, 65 

 vivipara, 24, 28 



Viviparidse, 16 



