PLATE XII. 



A. 



GrEN. 20.— SALPICHL^NA, J. Sm. [Synopsis p. xxv.] 

 Pig. 1. Portion of fertile pinna of S. voLUBiiia, J. Sm. (n. s.) 



2. Fragment of the same enlarged. 



3. Spore-case. 



4. Spores, 



B. 



Gen. 21.— SADLBBIA, S:ifs, [Synopsis p. xxv.] 



Pi&. 1, Fragment of iVond of S. ctatheoides, Klfa. (n. a.) 



2. Apex of seg-ment of the same enl^ged, showing the veins. 



3, Portion of same still more enlarged. 

 4 Spore-case. 



5. Spores. 



