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Fig. 2. — A shoal of Jelly-fish, about one of which (Rhizostoma) a group 

 of young Horse-mackerel are finding shelter. A Chryscwra in the 

 foreground, Aurclia in the background. — (Afle> Hacckel and 

 Kuckuck, by permission of J. B. Bailliere et Fils. ) 



