126 C@LENTERATA. 
plentifully in moderately deep water, and is often obtained attached to 
the hooks of fishermen’s lines. It is of a dull fleshy hue, hence the 
popular name. When the polypes or individuals are contracted it has 
a slightly rough appearance which enhances its resemblance to its 
gruesome appellation. When the polypes are expanded all over its 
surface the colony is converted into a zoophyte of great beauty. Each 
polype has eight feathered tentacles surrounding a central mouth. The 
Fig. 58.—Virew oF ENTIRE COLONY WITH TENTACLES EXPANDED. 
(After M‘InTosu.) (Magnified.) 
body of the polype stands out from the general surface of the colony, 
but on contraction is completely withdrawn. The general structural 
principle of the interior of each polype is similar to that of Ac¢inia, but 
there are only eight mesentertes, of which ¢wo only are directives, and 
the muscles of the other mesenteries are a// on the same face ; there is 
also only one szphonoglyph. 
Fuither, the ccelenteron is continued aborally into a ccenosarcal canal 
communicating with similar canals from the neighbouring polypes. 
