ILLUSTRATIONS IN THE TEXT. 



Paludestrina taylori 



Larvse of Dreissensia 



Teeth of Goniodoris modesta 



Kidney of Lophocercus viridis 



Teeth of Lophocercus viridis 



Lobiger crawling ... 



Teeth of Lobiger nevilli 



Teeth of Hamincea simillima 



Teeth of Newnesia antarctica 



Ahmentary Canal and Nervous System of Doriopsilla 



lO 



87, 88, 89 

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304 

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