INDEX TO THE SPECIES. 
eth 
Helicina Tankervillii . 186 
variabilis . 186 
viridis . 186 
Helix Busbii . 164 
cepoides . 164 
chrysocheilus . 163 
coccomelos . . 164 
columbaria . G3 
decipiens - 163 & 165 
Falconari . 163 
florida 2 163 
Harfordii ; 165 
intorta . 164 
latiianiSic ey.) x. . 165 
Luzonica » 165 
meretrix G3 
Mindana . 164 
Pan . 165 
pulcherrima 164 
sarcinosa 163 
zonifera . 165 
Hipponyx cornucopia 145 
levis 145 
Hippopus avicularis 98 
maculatus 98 
Hyalewa tridentata 295 
Hyria corrugata . oC 
syrmatophora . 90 
16 
Tanthina exigua 205 
fragilis . 205 
Iridina elongata 92 
ovata. 93 
Isocardia Basochiana 78 
GOP 4 ae 78 
Moltkiana . 18 
lto9 
10to16 
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Leptoconchus striatus . 
Lima bullata 
glacialis . 
Loscombii 
squamosa 
Limacina helicialis 
Limax antiquorum 
Lingula anatina 
Audebardii . 
semen . . 
tumidula 
Lithedomus caudigerus 
dactylus . 
Lithetrya dorsalis 
Littorina filosa 
obesa. 
pulchra . 
varia . 
vulgaris . 
Lottia Antillarum 
gigantea 
radians 
testudinaria 
Lucina Childreni 
Jamaicensis 
punctata 
Lutraria papyracea . 
solenoides 
Lymnzea castanea 
elongata 
fontinalis 
fusiformis 
glutinosa 
ovalis . 
rivalis 
rufescens 
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