PLATE 116. STARFISH, SEA-URCHINS AND SEA-CUCUMBERS. 

 1. Sea Egg or Sea-urchin [Waiia]. 2. The same with the spines vemoved. 3. Sea- 

 beaver or Heart -nrchin. 4. Aristotle's lantern: the masticating organ of a sea-urchin. 5. 

 (Di-seriiition of Plate Continm;! an llir Opposite Page.) 



