EXPLANATION To 1'LATK VI. 



;. 1. riumiilariit currinjalii Nutting (enlarged '. 



:>.. riiiiniiliiriii rorrnguta. Pnrtion of hydrm-ladinm (greatly enlarged). 



:i. I'ln in nhii-'ni forruyutu. I'art of colony, showing gonangia (enlarged). 



-1. riiimulitritt iiuhiii'i-i Xuttiug. Portion ol' liyilro: lailiuni ifiilarncd). 



5. riuniulai-iii inilniiri. Ilyilrocladial intc-rnoile (greatly enlarged), 



ti. I'liiiiinlarin Int/cniJ'rra Allmau. Hydrocladial internodc irularfjed). 



7. riiiiiuilaritt liuirniftra. 1'ortiou of stein anil a liydroc'ladinin. 



8. I'liiiniiliirin la:/i'(t'cru. Gonangia. 



9. rhiiiniliiria liii/cnijern Alluian. Part of colony with goiiaiijj'iiitii. (After Allnian.) 

 10. I'litnnilnriii liujcnifera. I'art of a liydrocladinni. (After Allinan. > 



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