144 



INDEX. 



A Lamellibranch 



Accessory plates 



Adductor muscle 



Affinities 



Aglaophenia 



Aglaophenia pluma 



Alimentary canal 



Alimentary polypite 



Alternation of generation 



Alyconidium 



Amoeba-like nematophore. 



An Appreciation 



Anemia adiantifolia 



Anguinella palmata 



Animal of Chiton 



Animal of Common Whelk 



Animal of Freshwater Mussel 



Annotations 



Anodonta cygnea 



Anomia 



Antennularia antennina 



Antennularia ramosa 



Anthomedusae .. 



Anus 



Apophyses 



Area 



Articulata 



Asexual reproduction 



Ashdown Sands 



Athecata 



Atractylidae 



Atrophy of buds 



Avicularia 



Avicularium 



Bell tentacles . . 



Bell and mouth tentacles 



Bennettites 



Bird's-head organ 



Bivalve Shell, The 



Bivalve Shells .. 



Blastostyle 



Bluestone 



