IV 



PHYLUM CCELENTERATA 



form, and the thread is usually provided at the base with 

 very numerous slender barbs. 



In virtue of possessing both stinging-capsules and gland- 



CD 



cells, the mesenteric filaments perform a double function. 

 The animal is very voracious, and is able to capture and 

 swallow small fishes, molluscs, sea-urchins, etc. The prey 



