PHYLUM CGELENTERATA 



103 



differs in different forms, more particularly as regards the 

 umbrella. There is always a manubrium, with gastric 



t 



Fig. 47. — Bougainvillea ramosa. A. entire colony, natural size ; B, portion of the 

 same magnified ; C, immature medusa ; cir. c, circular canal ; cu, cuticle or 

 perisarc ; cut. cav, enteric cavity ; JtyeZ, polype or hydranth ; hyp, hypostome or 

 manubrium ; med, medusa; vuib, manubrium ; rad. c, radial canal ; /, tentacle ; 

 7', velum, (From Parker's Biology x after Allman. ) This is closely allied to the 

 New England B. super dliatis. 



