EXPLANATION To 1'LATK VII. 



Km. 1. 1'liimularia goodti Nutting. Part of stein, showing nodes ami origin of hydmrladiu, (enlarged). 



1'. I'lumiilaria gooilri. A single hydrooladiliui f greatly enlarged ). 



3. I'lumiilaria gooilei. A liydrocladial internode (still more enlargi-il . 



I. riiitiinhir'Hi f/oorfci. Mesial nematophore (greatly iniignitii'd i. 



.">. I'lumiilaria riryiniu- Nutting. Part of liydroeladinin (enlarged). 



0. J'lumuluria rir;/iiiin. Single interuode (greatly enlarged). 



7. I'lumiilaria rii-ginin. Ilydranth (greatly enlarged). 



S. I'liiiiiulttria rirgiiiin: Kront. of stein, slmwing interninles and oi-igin nf hydroeladia f enlarged i. 



9. I'liimuJaria riniiiiin. Keuiatopbore, showing sarcostyle iliiglily magnilieil i. 



in. I'litmulariu riri/iiiin. ( ionangia (enlarged). 

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