65 - 



in nat. size. Fig. 9: basal portion of the same, ' .Fig. 10-11: branch 

 of the same; fig. 10, " langtrieb " arising from the point marked a in 

 ng. 11; k, k, " Kurtztriebe " ; /, /, " Langtriebe," ^ , Fig. 12: cross- 

 section of branch of the same, ^ .-Fig. 13: stichidium on a lower 

 pinna, r \ 4 . 



Heterosiphonia Mont. 1842. 



L i r: i: * jg. 



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