318 



THE INHABITANTS OF THE SEA. 



common stock or polyzoary is unbroken, and opening on both 

 surfaces, while in the Ketepores we find the cells opening only 

 on one side, and the leaf-like expansion pierced like network. 



Eschara eervicomis. 

 (Natural size.) 



Portion of a branch of the polypary of 

 Eschara eervicornis, magnified twenty 

 diameters, to show the form and ar- 

 rangement of cells. 



In cabinets of natural history, the species commonly called 

 Neptune's ruffles will rarely be found wanting. It is a native 

 of the Mediterranean, but individuals of a smaller size are alsa 

 found in the British seas. 



An individual of Eschara cervicorniB, 



highly magnified. 

 a. Tentacula. b. First dlgestiye cartty. 



d. Stomach. /. Anus. 



Retepora cellulosa. 

 (Neptune's Ruffle.) 



The Lepralise, or Sea-Scurfs, form thin calcareous crusts of 

 a white-yellow or reddish colour on rocks, shells, and sea- 

 weeds. To the naked eye they appear as rude unsightly 



