95 



Couperii, (GO Lea, 37 



crassa, (Eur.J Hald., 70, 88 



crebricostata, (G.) Lea, 45, 78 

 crebristriata, (G.) Lea, 



crenatella, (G.) Lea, 59 



crepera, (G.) Lea, 83 



crispa, (G.) Lea, 40 



crispata, (Zirphaea) 10 



crist&ta, (G.) Anth., 47 

 cruda, (G.) Lea, 



cruentata, CAnc.) Menke, 70 



cubicoides, (G.) Anth., 48 

 cucullata, (Xylotrya) Norman, 10 



culta, (GO Lea, ' 85 



Cumberlandiensis, (G.) Lea, 56, 80 



Cumingii, (Jouannetia) 9 



cuneiformis, (MartesiaJ 11 

 Curreyana, (GO Lea, 40, 42, 77 



Currierianum, (P.) Lea, 26 



curta, lG.) Menke, 69 



curta, (St.) Hald., 34, 76 



curtatum, (P.) Lea, 26 



curtum, (Sch.) Mighels, 63, 88 



curvatum, (P.) Lea, 29, 75 



curvicostata, (GO Anth., 45 



curvilabris, (G.) Anth., 57 



cuspidata, (GO Anth., 52 



cylindracea, (G.) Con., 81 



cylindraceum, (P.) Lea, 91 

 cylindraceum, (SchO Mighels, 63 

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



Decampii, (G.) Lea, 46 



decisa, (Amnicola) Hald., 12 



decora, (G.) Lea, 45 



decorata, (GO Anth., 36, 39 



deflectus, (Planorbis) Say, 12 



demissum, (SchO Anth., 64 



densa, (GO Anth., 53 



densecostata, (G.) Reeve, 45 



dentata, (AncO 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, (GO Lea, 44,77 



dignum, (P.) Lea, 25 

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



dilatata, (L.) Lea, 32 



dilatata, (Teredo) Stimpaon, 18 



dislocata, (GO Rav., 43, 77 



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



Doolyensis, (GO Lea, 43 



Downieana, (GO Lea, 37 



Downiei, (LO Lea, 34 



Draytonii, (GO Lea, 58 



dubia, (GO Lea, 56 



dubiosa, (G.) Lea, 56, 80 



Duchassaingi, (Jouannetia) |Desh., 9 

 Duttoniana, (Ang.) Lea, 31, 75 



Duttonii, (G.) Lea, 40 



22,23 



dux, (L.) Lea, 



48, 



ebenum, (GO Lea, 

 Edgariana, (G.) Lea, 

 elata, (GO Anth., 

 elegans, (Anc.) Anth., 

 elegantula, (G.) Anth. t 

 elevatum, (T.) Lea, Adams, 

 elevatum, (P.) Say, 25, 



Emeryensis, (G.) Lea, 

 eliminata, (G.) Anth., 

 Elliottii, (G.) Lea, 

 ellipsoides, (G.) Lea, 

 elliptica, (G.) Lea, 

 ellipticum, (Sch.) Lea, 

 elongatum, (PO Lea, 26, 



Estabrookii, (G.) Lea, 

 Estabrookii, (P.j Lea, 

 Etowahensis, (GO Lea, 

 exaratum, (PO Menke, 

 exaratum, (P.) Lea, 

 excavata, (G.) Anth., 

 excisum, (Sck.J Lea, 

 excuratum, (P.) Conr., 22, 

 excurvatum, (P.) Conr., 

 exigua, (Melania) Conr., 

 exilis, (G.) Hald., 56, 



exilis, (G.) Hald., Adams, 

 eximium, (PO Anth., 

 expansa, (G.) Lea, 



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 



fabalis, (GO Lea, 82 



fallax, (GO Lea, 82 



fasciata, (G.) Menke, 59 



fascinans, (GO Lea, 83 



fasciolata, (Ang.) Reeve, 31 



fastigiatum, (P.) Anth., 27, 74 



Fieldii, (Planorbis) Tryon, 12 



filum, (P.J) Lea, 23, 74 



fimbriata, (Xylotryaj 11, 18 



flammata, (Anc.) Lea, 71, 90 



flava, (GO Lea, 54 



flavescens, (G.) Lea, 76 



Florencense, (P.) Lea, 24 

 Florentianus, (Ang.) Lea, Reeve, 30 



Florentianus, (L.) Lea, 32, 76 



Floridensis, (G.) Reeve, 37 



fluvialis, (Io) Say, 20, 73 



Foremanii, (Anc.) Lea, 71 



