95 



Couperii, (G.) Lea, 37 



crassa, fEur.j Hald., 70, 88 



crebricostata, (G.) Lea, 45, 78 

 crebristriata, (G.) Lea, 

 crenatella, (G.) Lea, 



crepera, (G.) Lea, 83 



criipa, (G.) Lea, 40 



crispata, (Zirphaea^ 10 



cristtta, (G.; Anth., 47 



cruda, (G.) Lea, 47 



cruentata, (Anc.) Menke, 70 



cubicoides, (G.) Anth., 48 

 cucullata, (Xylotrya) Norman, 10 



culta, (G.) Lea, ' 85 



Cumberlandiensia, (G.) Lea, 56, 80 



Cumingii, (Jouannetia) 9 



cuneiformis, (Martesia) 11 



Curreyana, (G.) Lea, 40, 42, 77 



Currierianum, (P.) Lea, 26 



curta, CG.) Menke, 69 



curta, fStJ Hald., 34, 76 



curtatum, (P.) Lea, 26 



curtum, (Sch.) Mighels, 63, 88 



curvatum, (P.) Lea, 29, 75 



curvicoetata, (G.) Anth., 45 



curvilabris, (G.) Anth., 57 



cuspidata, (G. ) Anth., 52 



cylindracea, (G.) Con., 81 



cylindraceum, (P.) Lea, 91 



cylindraceum, (Sch.) Mighela, 63 

 cylindrica, (G.) Con., Wheatley, 81 



Decampii, (G.) Lea, 46 



deciea, (Amnicola) Hald., 12 



decora, (G.) Lea, 45 



decorata, (G.) Anth., 36, 39 



deflectus, (PlanorbisJ Say, 12 



demissum, (Sch.J Anth., 64 



densa, (G.) Anth., 53 



densecostata, (G.) Reev, 45 



dentata, (Anc.) Couth., 67, 89 



dentata, (Anc.) Lea, 68 



dentifera, (Rocellaria) Dufo, 9 

 depygis, (G. ) Say, 49, 52, 53, 59, 79 



debygis, (G.) Say, Chenu, 75 



Deshayesiana, (G.) Lea, 42, 78 



Deshayesiana, (G.) Reeve, 42 



difficilis, (G.; Lea, 44, 77 



dignum, (P.) Lea, 25 



dilatata, (Anc.) Conr., 68, 72, 89, 90 



dilatata, (L.) Lea, 32 



dilatata, (Teredo) Stimpson, 18 



dislocata, (G.) Rav., 43, 77 



dissimilis, (Anc.) Say, 67, 68, 89 



Doolyensis, (G.) Lea, 43 



Downieana, (G.) Lea, 37 



Downiei, (L.) Lea, 34 



Draytonii, (G.) Lea, 58 



dubia, (G.) Lea, 56 



dubiosa, (G.) Lea, 56, 80 

 Duchassaingi, (Jouannetia) '.Desh., 9 



Duttoniana, (Ang.) Lea, 31, 75 



Duttonii, (G.) Lea, 40 



dm, (X.) Lea, 22,23 



ebenum, (G.) Lea, 

 Edgariana, (G.) Lea, 

 elata, (G.) Anth., 

 elegana, (Anc.) Anth., 

 elegantula, (G.) Anth., 

 elevatum, (P.) Lea, Adama, 

 elevatum, (P.) Say, 

 Emeryensis, (G.) Lea, 

 eliminata, (G.) Anth., 

 Elliottii, (G.) Lea, 

 ellipsoides, fG.) Lea, 

 elliptica, (G.) Lea, 

 ellipticum, (Sch.) Lea, 

 elongatum, (P.) Lea, 

 Estabrookii, (G.) Lea, 

 Estabrookii, (P.} Lea, 

 Etowahensis, (G.) Lea, 

 exaratura, (P.) Menke, 

 exaratum, (P.) Lea, 

 excavata, (G.) Anth., 

 excisum, (Sch.) Lea, 

 excuratum, (P.) Conr., 

 excurvatum, (P.) Conr., 

 exigua, (Melania) Conr., 

 exilis, (G.) Hald., 

 exilis, (G. ) Hald., Adama, 

 eximium, (P.) Anth., 

 expansa, (G.) Lea, 



fabalia, (G.) Lea, 

 fallax, (G.) Lea, 

 fasciata, (G.) Menke, 

 fascinans, (G.^ Lea, 

 fasciolata, (Ang.) ReeTe, 

 fastigiatum, (P.^ Anth., 

 Fieldii, (Planorbia) Tryon, 

 filum, (P.; Lea, 

 fimbriata, (Xylotrya^ 

 flammata, (A.nc.) Lea, 

 flava, CG.) Lea, 

 flavescens, (G.) Lea, 

 Florencense, ("P.) Lea, 

 Florentianus, (Ang.) Lea, 

 Florentianus, (L.) Lea, 

 Floridensis, (G.J Reeve, 

 fluvialis, CIo) Say, 

 Foreman ii, ("Anc.) Lea, 



48, 



25, 



26, 



22. 



56, 



51, 79 



44, 77 



57 



71 



47, 77 

 74 



26,76 

 92 

 46 

 54 

 86 

 86 

 62 



27,74 



55, 80 



29 



37,54 

 23 



26, 74 



84, 87 



62, 88 



23, 73 



22 



14 



57,81 

 57 

 26 

 79 



82 

 82 

 59 

 83 

 \31 

 27,74 

 12 



23, 74 

 11,18 

 71,90 

 54 

 76 

 24 



Reeve, 30 

 32, 76 

 37 



20. 73 

 71 



