477 



Costa Rica Miocenk — Olsson 



305 



Puncturella trifolium 166 



watsoni 1 66 



Purpura 100 



n odulosa loi 



nodulosum 305 



Pyramidella Candida 107 



crenulata 107 



dolabrata 107 



mitchelliana 10 



obtusoides / 10 



smithi 107 



thelma 108 



Pyrula abbreviata loi 



papyratia 119 



R 



Ranella ....114 



clathrata 99 



crassa 306 



Retusa f rielei 49 



Rhizochilus loi 



Ricinula nodulosa 305 



Rimula 1 67 



asturiana 167 



Ringicula dominicana 194, 196, 



2o6d 



hypograpta 186 



leptocheila 47 



nitida 47 



semistriata 2o6d 



Rissoa acutiocostata 139 



chesneli 139 



percipitata 138 



Rissoina alabamensis 26 



browniana 139 



chesneli 139 



decussata 139 



elegantissima 140 



1 aevigata 139 



sagraiana 1 40 



Rochefortia minuta 2 20 



Rotella cryptospira... 162 



s 



Sabatia bathymophila 50 



Sanguinolaria alouata ^2 432 



Santo Domingo Miocene 92 



Saxicavella alabamensis j 21 



Sayella 56 



Scalaria 102 



vScaphander librarius 49 



nobilis 49 



punctostriatus 49 



watsoni 49 



Scaphella costaricana 1 87 



costaricensis 18 272 



junonia 81 



Scobinella morierei 7 251 



Sconsia bocasensis /j 309 



cocleana 75 187, 310 



laevigata 195, 200, 201 



var. gabbi 75 308 



zone 193 



sublsevigata 200 



Seguenzia 158 



formosa 120 



iconica 121 



m onocingulata 120 



trispinosa 120 



Seila adamsi 124 



Semele claytoni j?....i94, 196, 431 



Isevis 191 



var. costaricensis ^2 430 



langdoniana 2 18 



monroensis 2 19 



sayi 32..: 430 



ScUiicassis 118 



Seminella stearnsi 94 



Serpulorbis papulosa 75... 196, 200, 



317 

 sculpturatus 200 



Sigaretus 150 



gatunensis 186 



martinianum 150 



gabbi 186 



Siliquaria squamata 133 



limonensis 188 



modesta 134, 188 



