47*: 



Bulletin 39 



299 



Latirus irazu // 279 



taurua // 280 



Leba balboae 21 345 



dalliana j/ -^47 



Ivcda davilse 21 -^45 



ensinoides 21 346 



milamensis 25 



parva 25 



quercollis 25 



qnitanensis 21 346 



saf f ordana 25 



Lepella tubicola 152 



Lepidopleurus pergranatus 1 68 



lyeptochiton 1 68 



Leptothyra induta 153 



Leuconia 56 



Leucosyrinx chloris 8 231 



sigsbeei 63 



subgrundif era 63 



tenoceras 63 



verrilli 62 



Leucozonia cingulifera 85 



ocellata 85 



Levifusus dalei 26 



pagoda 26 



suteri , 7 



Limsea solida 194 



Limopsis monilis 2g 349 



Linsea solida j/ 199, 381 



Liostraca 106 



Liotia bairdi 154 



gemmia 154 



tricarinata 154 



Lissospira proxima 160 



lyitiopa bombix... 137 



melaniostoma 137 



Littorina augulifera , 136 



irrorata 136 



mespilum 136 



tectarius 137 



ziczac 136 



Livona pica 153 



Lorgcha;iis 107 



I.otoriurn 117 



Lucapiua adspersa 165 



cancellata 165 



fasciata 165 



hondurasensis 165 



siifFnsa 165 



Ivucina cristata 426 



divaricata 396 



primoidea 2 19 



quadrisulcata 200 



Lunatia 148 



M 



Mocoma costaricana 2g 428 



elongata 191 



gatunensis 2g 429 



panamensis 191 



var. canalis 2g 429 



ilacrocallista maculata 34. 189, 



406 



Mactra alata j/ 189, 194, 455 



elegans 191 



estrellana j/ 191, 435 



exoleta ji 189, 191, 434 



nuttalli 437 



sincola j/ 436 



Malea camura 186, 191, 200 



elHptica i§ 311 



ringens 191 



Mammilla 149 



Mangilia antonia 71 



astrictia 69 



atrostyla 70 



balteata 69 



biconica 69 



cerina 70 



cerinella 71 



limonitella 70 



melanitica 71 



peripla 71 



plicosa 69 



