Nucula depressa 
gibbosa 
hyperborea 
Jacksoni 
leevigata 
lenticula 
lucida 
margaritacea 
minuta 
nitida 
nucleus 
oblonga 
oblongoides 
Philippiana 
Pygmea 
rostrata 
Ryckholtiana 
Thracieformis 
tenera 
tenuis 
tenuisulcata 
trigonula 
truncata 
Nuculina 
Nux 
Obliquaria 
Obovaria 
Odatelia 
Odoncinetus 
Omala 
Orbiculus 
Oreada 
Ortygia 
Osteodesma 
Ostrea borealis 
deformis 
denticulata 
edulis 
Sfoliosa 
hippopus 
lamellosa 
parasitica 
princeps 
spectrum 
undulata 
ungulata 
INDEX. 
PAGE 
Oxysma 
Palliolum 
Pandora glacialis 
inezequivalvis 
margaritacea 
obtusa 
Pinna 
rostrata 
Panopeea Aldrovandi 
Americana 
arctica 
Bivone 
Faujasii 
gentilis 
glycimeris 
Ipsviciensis 
Norvegica 
Spengleri 
reflexa 
Paphia deaurata 
Papyridea 
Parallelopipedum 
Partularia 
Paxyodon 
Pecten aspersus 
Audouinii 
Bruei . 
complanatus 
Clintonius 
Danicus 
distortus 
domesticus 
dubius 
Dumasit 
elongatus 
flavus . 
Sragilis 
Gerardii 
glabris 
gloria-maris 
gracilis 
grandis 
Tslandicus 
Jamesoni 
Lamalii 
levis 
Ad. 
