IO2 



MANUAL OF ZOOLOGY. 



budded off. The central polypite is furnished with a mouth at 

 its distal end, and the mouth opens into a digestive sac. From 

 the proximal end of this stomach proceed four radiating canals 



Fig. 26. Portion of the colony of Clytia (Campanularia)'Johnstoni, magnified; 

 p Nutritive zooid ; g Capsules in which the reproductive zooids are produced. 



which extend to the circumference of the disc, where they all 

 open into a single circular vessel surrounding the mouth of 

 the bell. From the margins of the disc hang also a number 

 of delicate extensile filaments or tentacles; and the circum- 

 ference is still further adorned with a series of brightly-coloured 

 spots, which are probably organs of sense. The mouth of the 

 bell is partially closed by a delicate transparent membrane or 

 shelf, the so-called "veil." Thus constituted, these beautiful 

 little beings lead an independent and locomotive existence for 



