10 



Part first. 



Yig. 23. Natica millepunctata, 

 l /2 nat. size. p. 79. 



Fig. 24. Pecten jacobaeus, 

 l /2 nat. size. p. 84. 



Fig. 26. Pholas dactylus, 



in a stone, 

 1 /2 nat. size. p. 83. 



Fig. 25. Three specimens of 



Mytilus eduliSj 



attached to a piece of rope, 



*/2 nat. size. p. 83. 



Fig. 27. Two specimens of 



Lithodomus dactylus, 



within a piece of tufa, 



1 /2 nat. size. p. 83. 



3. Bivalves (p. 81). Scallop (Pecten, fig. 24), with flat 

 fluted shell. Edible Mussel (Mytilus, fig. 25). Piddock 

 (Pholas, fig. 26) and Lithodomus (fig. 27), both making 

 holes in rocks or coral reefs. 



*EggS Of Mollusks, Of the squid hanging from the dead 

 coral in long white bags; of the sea-hare fine yellow 

 strings, of the tun ribbons a finger-length broad; of 

 Murex large honeycomb-like masses. 



The lettuce sea-weed serves as food for the sea-hares. 



